focus

vt.

1. 使聚焦[（+on）]
2. 調節（鏡頭等）的焦距[（+on）]
   You can focus your telescope on that distant television tower.

   你可以對著那座遠方的電視塔調節望遠鏡的鏡頭。

3. （調節鏡頭的焦距）使（圖像等）清晰
4. 使集中[（+on）]
   I can't focus my thoughts today.

   今天我的思想集中不起來。

vi.

1. 聚焦
   A defect of vision prevented him from focusing accurately.

   視力上的缺陷使他不能準確對焦。

2. 調節焦距[（+on）]
3. 集中[（+on）]
   The beams of light moved across the sky and focused on the plane.

   光束在空中移動，集中對準飛機。