a bird in the bush
n. 未到手的东西

a bird in the hand
n. 已到手的东西

A bird in the hand is worth two in the bush
st. 双鸟在林不如一鸟在手

a blot on the landscape
破坏自然美的人或物, 丢脸的人

a bolt from the blue
n. 意外事件

a book of the Old Testament
旧约的一个章节

A bright rainbow arched above after the rain.
雨后彩虹在天上形成弓状.

A dark horse candidate gets elected in the electio
一个“黑马”候选人当选了

a drop in the bucket.
沧海一粟；九牛一毛。此句源自圣经，原意为“水桶中的一滴水”。

A famous thinker once wrote that'the greatest threat to mankind is mankind itself !'If this is indeed the case,then the current situation should make us ponder our futuer existence.
一位著名的思想家曾经写道：“对人类最大的威胁是人类自身！”如果事实确实如此，那么，现状应该促使我们对我们未来的生存进行思索了。