inquire

vt.

1. 訊問；查問；調查[+wh-]
   She inquired why he had not thought of that before.

   她查問為何他以前沒想到那一點。

vi.

1. 詢問；調查[（+about/into）]
   Why don't you inquire by telephone?

   你為何不打電話詢問？