1、 He has read many books on the subject、他看过许多关于这一方面的书。
2、 The prices are subject to change、价格可能有变动。
3、 The suspect was subjected to cross-examination at the police station、嫌犯在警察局受到盘问。
4、 My mother is very subject to headaches、我母亲动不动就头痛。
5、 subject