adj.(虚)弱的,无力(度)的;微弱的;懦弱的;不牢固的;疲软的,萧条的;不能令人信服的;稀薄的;
例句:
She suffered from a weak heart.
她心脏不好。
a weak and cowardly man
一个懦弱胆怯的男子
His legs felt weak.
他觉得两腿发软。