陷于的英文：
caught in (a bad situation)
fall into (a trap, etc.)

参考例句：

to be beguiled;To fall into temptation
陷于诱惑

To arrive at one’s finger’s ends
陷于穷困

Be head over heels in love; be madly in love
深陷于爱之中

Frequent gyrations in our national direction demoralize the Foreign Service
我们在基本国策上的多变性，常使外交部门陷于混乱。

To be at odds with fate
陷于不幸

Be at a standstill
陷于停滞

Be in [all of] a muck
陷于混乱状态

The snare of love
爱情上陷于困境。

A strike that crippled the factory.
罢工使工厂陷于瘫痪

He was lost in reverie [thought].
他陷于幻想[沉思]。

caught是什么意思：
v. [catch] 的过去式和过去分词；逮住，赶上，撞见

caught as if in a mesh.
好像是被陷阱陷住了一样。

The fish I caught was this big.
我捕到的那条鱼有这么大。

Old Birds are not to be caught with chaff
老谋是不会失算的

situation是什么意思：
n. 情况；状况；局面；处境，境遇；位置；地点

appreciation [of situation]
判断〔局势〕

mercurial situation
易变的形势

a survey of the situation, subject
对情况、 问题的概括论述