need not;unnecessary

open one's eyes; broaden one's horizon; be an eye-opener

crack down on gangland and pornography

hard to find;like finding a needle in a haystack (lit. to fish a needle from the sea)

look for a needle in a haystack

be greatly surprised

Strike while the iron is hot

to hit a person when he's down

inadvertently alert an enemy/opponent;punish sb. as a warning to others (lit. beat the grass to scare the snake)

very close;inseparable;usually refers to two or more people

calm;unruffled

to suffer for one's wisdom

bid farewell to the old and usher in the new; ring out the old year and ring in the new

bid farewell to the old year and usher in the new

the words fail to convey the idea –poorly expressed;senseless;inarticulate

carry on the family name/line;produce a male heir to continue the family line;to carry on one's ancestral line

the stream flows without stopping;unending flow

He was a babe in the woods

stand out among one's fellows

quick and clever talking;eloquent