A thing taken in; also, a taking in, as of breath.

吸之物；吸入(如呼吸)。

The place where a fluid enters a pipe, channel, etc.

(液体入管或渠道等之)入口。

A narrowing, as in a stocking.

狭窄部(如袜之狭窄部分)。

Amount taken in.

引入量；吸入量。