... look for a needle in a haystack大海捞针 between hammer and anvil腹背受敌 white lie善意的谎言 ...
双语例句
1
Nut-cracking, for example, is a complex skill that involves placing a nut between an anvil stone and a hammer stone and coordinating the movements to hit the nut just right.
例如，弄碎坚果是一项复杂的技能，需要将坚果放在石砧和石锤之间，然后调整动作以恰当的方式击打坚果。
2
A senior civil servant in Morocco laments that his country is "between the hammerand the anvil" of Africa and Europe.