Push the envelope:

推信封 ×

挑戰(zhàn)極限 √

例句：

That guy really likes to push the envelope.

他真的喜歡挑戰(zhàn)極限。

Out of the Woods:

逃離森林 ×

脫離困境 √

例句：

I visited her this morning and doctors say she is out of the woods.

我今早看望了她，醫(yī)生說(shuō)她已經(jīng)脫離了危險(xiǎn)。