be referable to的用法和樣例：
例句
- His illness is attributable to overwork.
他的病可歸因於勞累過度。 - Roughness may be attributable to the nature of the wall substance and the method of its manufacture.
粗糙度可歸因於管壁材料性質及其製造方法。
- I enquired about trains to New York.
我查問有關去紐約的火車開行情況。 - He asked me some questions relative to the subject.
他問了我一些有關這個題目的問題。
