??? 情景例句
Prices are always negotiable.
價錢總是可以商量的。
In university, students are trained to become teachers and engineers.
大學的學生被訓練成為教師和工程師。
Just then, the gaoler appeared with the precious letter in his bands.
這時獄卒上場，手里拿著那封珍貴的信。