vt.

1. 发现，察觉；查出，看穿
   I detected anger in her voice.

   我察觉出她说话声里含着愤怒。

   He soon detected the faulty valve.

   他很快查到了出毛病的阀门。

2. 【无】对……检波

v.

1. discover or identify the presence or existence of.
2. discover or investigate (a crime or its perpetrators).
3. discern (something intangible or barely perceptible).