a yardstick by which to measure sth衡量某事物的标准By any yardstick, that's a large amount of money.用任何标准衡量, 那都是巨大的金额.Profit is not the only yardstick of success.利润并不是衡量成功的唯一尺度....
On 20 August 1960 Senegal seceded.塞内加尔于1960年8月20日独立出去。The Republic of Panama seceded from Colombia in 1903.巴拿马共和国于1903年脱离哥伦比亚。Estonia reclaimed its independence and seceded from the Soviet Union.爱沙尼亚要求归还其独立权并退出苏维埃联盟....
这昆虫的翅膀几乎是透明的。The insect's wings are almost transparent.羽毛最初由昆虫的翅瓣演化而来.Feathers initially developed from insect scales.他发现把昆虫的翅膀比作一艘帆船在某种程度上是有用的。He finds the comparison of insect wings with a sailing boat useful up t...