2022年7月22日
cock
摘要： Cock or cocks most commonly refers to: Cock (bird) or rooster, a male of any bird species Cock (slang), a slang term for the penis A rooster or cock i 阅读全文
posted @ 2022-07-22 19:35 华容道专家 阅读(459) 评论(0) 推荐(0)
coat
摘要： A coat is a garment worn on the upper body by either gender for warmth or fashion. Coats typically have long sleeves and are open down the front, clos 阅读全文
posted @ 2022-07-22 19:25 华容道专家 阅读(437) 评论(0) 推荐(0)
coast
摘要： The coast, also known as the coastline or seashore, is defined as the area where land meets the sea or ocean, or as a line that forms the boundary bet 阅读全文
posted @ 2022-07-22 16:11 华容道专家 阅读(277) 评论(0) 推荐(0)
-i的平方是-1吗？
摘要： (-i) * (-i) = i * i = -1? 请看下题：a^2 - b^2 = 5 且 ab=6，求a - b。 我们可以把a和b的值都求出来。把b=6/a代入另外一式，令x=a^2，可得x^2 - 5x - 36=0. 于是a^2=9，或a^2=-4 当a^2=-4时，b^2=-9. a=2 阅读全文
posted @ 2022-07-22 11:09 华容道专家 阅读(741) 评论(0) 推荐(0)
coarse
摘要： coarse [LDOCE] having a rough surface that feels slightly hard =rough ≠smooth consisting of threads or parts that are thick or large ≠fine talking in 阅读全文
posted @ 2022-07-22 10:50 华容道专家 阅读(186) 评论(0) 推荐(0)