它甚至让邮差莞尔一笑。

It might even put a smile on the mail carrier's face.

但她只是莞尔一笑，眼里并没有任何表示。

But she had only smiled a little and her eyes had admitted nothing.

不要太过严肃，不妨对自己的过错和缺点莞尔一笑。

Don't take yourself too seriously; laugh at your slipups and faults.