n. 进口, 插入物

[化] 入口; 进口; 投料口; 供料口

[医] 入口, 进[水]口

Inlet \In"let\, n.
1. A passage by which an inclosed place may be entered; a
place of ingress; entrance; especially, a narrow waterway
leading into a harbor.

Doors and windows, inlets of men and of light. --Sir
H. Wotton.

2. A bay or recess, as in the shore of a sea, lake, or large
river; a narrow strip of water running into the land or
between islands.

3. That which is let in or inlaid; an inserted material.

Note: Inlet is also used adjectively, as in inlet pipe, inlet
valve, etc.