bi, dual, double, duo, tandem

Bi- is used at the beginning of nouns and adjectives that have "two" as part of their meaning.

• a bilateral agreement/treaty 双边的协议/条约 lateral: relating to the sides of sth, or movement to the side 侧; 边
• the Collins bilingual dictionary 柯林斯双语词典。linguistics 语言学
• Someone who is bilingual can speak two languages equally well, usually because they learned both languages as a child.
• A type of multivibrator whose output consists of 2 stable states is known as Bistable Multivibrator. The circuit switches from one stable state to the other when an appropriate trigger pulse is applied. In a nutshell, in a bistable multivibrator, one stable state can be maintained until a triggering pulse is provided.
  • You can use in a nutshell to indicate that you are saying something in a very brief way, using few words. 不是“果壳中”
  • multi: 多。multilateral: 多边。multilingual: 多语。multimedia: 多媒体。
• If something long and thin bisects an area or line, it divides the area or line in half.

Dual means having two parts, functions, or aspects.

• a dual system of education
• dual role as composer and conductor 他兼作曲家及指挥的双重身分
• She has dual nationality , of Canada and Britain (=she is a citizen of Canada and Britain) .
• The bridge has a dual role, carrying both road and rail.
• a dual-control car is one used for driving lessons, in which the instructor can operate the clutch and brakes

duo /ˈdjuːəu; US ˈduːəu/

1. two people who perform together or are often seen together
2. a piece of music for two performers =duet

In 2006, Intel announced the Core Duo [酷睿]. The first dual-core processor for portable PCs boasted excellent performance - much better than the Pentium 4 [这个很慢，所以你懂得]. It was also one of the first x86 processors to be truly dual-core. The Intel Core 2 Duo [酷睿二代] Processor is Intel's second-generation mobile dual-core processor designed to deliver breakthrough performance and great power savings. 胶水双核 | The Performance King: Intel Core 2 Duo

A bi-fuel system uses two types of fuel, but the fuels are not mixed together during operation. The engine is capable of switching between the two so that it is always using the type of fuel most efficient for the conditions at hand. A dual-fuel system is capable of using two types of fuel at the same time in a mixture. It usually cranks up on one type of fuel, and a governor built into the system gradually adds the secondary fuel source until the optimal mixture of the two fuels is achieved for efficient running. [link]

bi和dual可能并不泾渭分明. Alder Lake第一个有大小核设计的的Intel CPU, 它是2021年才问世的。Intel Alder Lake explained

泾河和渭河水一清一浊，泾河的水流入渭河时，清浊不混。比喻界限清楚或是非分明。出自《诗经》。

tandem /ˈtændəm/

• A tandem is a bicycle designed for two riders.
• in tandem: 1. (原意)one behind another; 2. (引申)doing sth together or at the same time as sb/sth else
• Tandem Computers was a major manufacturer of fault-tolerant computers founded in 1974 by James Treybig. It was the first company to address [致力于] the transaction processing (OLTP) market for online reservations [预约] and financial transfers [转账]. Tandem computers were designed from the ground up for fault-tolerant operation in banks, stock exchanges, credit card companies and ATM machines. The company's most significant product was its MIPS-based Himalaya series that ran Tandem's Guardian OS and NonStop kernel.

In online transaction processing (OLTP), information systems typically facilitate and manage transaction-oriented applications. The term "transaction" can have two different meanings, both of which might apply: in the realm of computers or database transactions it denotes an atomic change of state, whereas in the realm of business or finance, the term typically denotes an exchange of economic entities (as used by, e.g., Transaction Processing Performance Council or commercial transactions.) OLTP may use transactions of the first type to record transactions of the second.

verbatim /və:ˈbeitim/ 一字不差的 [Origin: Latin verbum; VERB] =word-for-word

• 以前有个软盘和光盘的牌子叫“威宝”，英文即verbatim.

verbal: 1. spoken rather than written; 2. relating to words or using words; 3. relating to a verb

文字、文章

• If you take something literally, you think that a word or expression is being used with its most simple or basic meaning.
• literal [Origin: Medieval Latin literalis, from Latin littera; LETTER]
• literature [Origin: Latin litteratura, from litteratus; LITERATE]

六级/考研单词: noun, adjective, multilateral, treaty, dictionary, trigger, pulse, nut, dual, compose, conduct, educate, instruct, clutch, brake, seldom, boast, superb, mobile, breakthrough, gradual, optimum, offline, realm, compute, data, denote, entity