Prices may be subject to alteration.
價(jià)格可能會(huì)受變更影響。
There's even a special subject index.
甚至有一個(gè)特別的主題索引。
I'm doing some research on the subject.
我正就這一課題進(jìn)行研究。
He is an engrossing subject for a book.
他是非常有趣的寫(xiě)書(shū)題材。
The books are grouped together by subject.
這些書(shū)按科目分類。