director liability的用法和樣例：
例句
- When duly appointed, an alternate or substitute director will, in the absence of the di-rector who appointed him, be entitled to perform all the functions of the latter.
適當地受委后，交替或後補董事在委任他的董事不在時，有權執行後者的所有職責。 - In the event that the chairman is unable to discharge his responsibilities, he shall empower a vice-chairman or another director to represent the joint venture.
董事長不能履行職責時，應授權副董事長或其他董事代表合營企業。
