blade

A blade is the portion of a tool, weapon, or machine with an edge that is designed to puncture, chop, slice or scrape surfaces or materials. Blades are typically made from materials that are harder than those they are to be used on. Historically, humans have made blades from flaking stones such as flint or obsidian, and from various metal such as copper, bronze and iron. Modern blades are often made of steel or ceramic. Blades are one of humanity's oldest tools, and continue to be used for combat, food preparation, and other purposes.

Blades work by concentrating force on the cutting edge. Certain blades, such as those used on bread knives or saws, are serrated [有锯齿形边缘的], further concentrating force on the point of each tooth.

During food preparation, knives are mainly used for slicing, chopping, and piercing. In combat, a blade may be used to slash or puncture, and may also be thrown or otherwise propelled.

Inline skates are colloquially known as "blades" or "roller blades". Inline skates are a type of roller skate used for inline skating. Unlike quad skates, which have two front and two rear wheels, inline skates typically have two to five wheels arranged in a single line. Some, especially those for recreation, have a rubber "stop" or "brake" block attached to the rear of one or occasionally both of the skates so that the skater can slow down or stop by leaning back on the foot with the brake skate.

The modern style of inline skates was developed as a substitute for ice skates, for use by a Russian athlete training on solid ground for Olympic long track speed skating events. Life magazine published a photo of American skater Eric Heiden, training for the 1980 Olympics, using such skates on a Wisconsin road.

A skate is composed of a boot, worn on the foot. To the boot is attached a frame, which holds the wheels in place. Bearings allow the wheels to rotate freely around an axle. Finally, the rubber brake typically attaches to the frame of the right boot.

There are different types of inline skates for different types of skating such as aggressive skating, speed skating, inline hockey and artistic inline skating. Those differ in the boots, frames and wheels that are used.

我家孩子当初穿的是米高的。我穿过更便宜的牌子(名字忘了)，都足够好。超市里特别便宜的那种不行，还真影响技术和心情。儿童轮滑鞋能调节大小，成人的不行，还是当场试下尺码好。建议孩子的网上买，成人的迪卡侬，一家在全球生产和销售体育用品的法国企业。排名欧洲第一的迪卡侬不仅是运动用品的设计和生产者，也是全球拥有351家专营运动用品商场的零售商。以物美价廉在业内著称，是初学者选购运动装备的好去处。或者搜下当地有没有专营运动或轮滑产品的。

ZTE Blade is a cellphone manufactured by the ZTE Corporation.

A blade server is a stripped-down server computer with a modular design optimized to minimize the use of physical space and energy. Blade servers have many components removed to save space, minimize power consumption and other considerations, while still having all the functional components to be considered a computer. Unlike a rack-mount server, a blade server fits inside a blade enclosure, which can hold multiple blade servers, providing services such as power, cooling, networking, various interconnects and management. 浪潮刀片式服务器：

六级/考研单词: portion, chop, slice, scrape, copper, bronze, seldom, humane, combat, farther, pierce, slash, propel, skate, rear, recreation, rubber, brake, lean, substitute, athlete, olympic, compose, rotate, hockey, differ, manufacture, compute, physics