under

adj

The temperature dropped under freezing last night.

意味（1）

Lower; beneath something.

This treatment protects the under portion of the car from rust.

意味（2）

In a state of subordination, submission or defeat.

The army could not keep the people under.

意味（3）

(medicine, colloquial) Under anesthesia, especially general anesthesia; sedated.

Ensure the patient is sufficiently under.

意味（4）

(informal) Insufficient or lacking in a particular respect.

This chicken is a bit under. (insufficiently cooked)