vi.

1. 表现，行为举止[Q]
   The young lady behaved courageously in the face of danger.

   那位年轻女士面对危险表现得十分勇敢。

2. 行为检点，听话，表现好
3. （机器等）开动，运转
   How is the new machine behaving?

   新机器的性能怎样？

4. （事物）起某种作用
   The chemical can behave as an acid.

   这种化学制品能起酸的作用。

vt.

1. （后接oneself）使检点，使守规矩
   Behave yourself!

   规矩点！

2. （后接oneself）使表现得（……）[O]

v.

1. act or conduct oneself in a specified way.
2. (also behave oneself) conduct oneself in accordance with accepted norms.