他的脸耷拉下来，象是个挨了训的孩子似地撅起嘴来。

His face fell, and he pouted his lips like a scolded child.

我把手伸进口袋里，紧紧地攒着钥匙。我撅起嘴，然后慎重地摇了摇头，紧张地露齿微笑。

My hand was in my pocket, curled tightly around the key. I pursed my lips, deliberated, then shook my head with a tight grin.