n.

1. 投資；投資額；投資物[U][C][（+in）]
   He made a large investment in the business enterprise.

   他對那個企業作了大量投資。

   His investments amount to five million dollars.

   他的投資額達五百萬元。

2. （精力，時間等的）投入[U]
3. 授權（儀式）；授爵（儀式）[U][C]
4. 【軍】包圍；封鎖[U]

n.