他把邮票贴在信封上。

She stuck the stamp on the envelope.

用所提供的邮资已付信封。

Use the post-paid envelope provided.

安妮替她在信封上贴了邮票。

Annie stamped the envelope for her.

在用过信封的背面乱画。

Scrawling on the back of a used envelope.

信封从卢克手指间滑落。

The envelope slipped through Luke's fingers.