冷笑的英文：
razz
smile
sneer

参考例句：

His lips suddenly twisted in a mirthless smile and he roared in Mo Kan-cheng's face, "Mr. Mo!
忽然他又冷笑起来，就冲着莫干丞的脸大声喊道:“莫先生！

Smile at; grin at
对..微笑;冷笑

Sneer at; smile with contempt
冷笑;讥笑

The peer's queer peering is a sheer sneer.
同辈的不舒服的凝视是绝对的冷笑。

and bounded up the steps two at a time, with Ah Liu laughing scornfully behind him
三脚两步上楼梯去，只听得阿刘在背后冷笑。

Tu Weiyueh gave a derisive snort, then suddenly swung round to Pockmarked Li and rasped
屠维岳轻轻冷笑一声，突然翻了脸，看着李麻子，厉声喝道

Suddenly Wu Sun-fu threw the newspaper aside and laughed ironically
蓦地吴荪甫撩下了报纸，克勒一声冷笑。

razz是什么意思：
n. 砸舌声
vt. 非难,冷笑,嘲弄
smile是什么意思：
v. 微笑，笑；惠及，露出（笑容）
n. 微笑；笑容

He smiled a discreet smile.
他的脸上露出带思虑的微笑。

a responsive smile
表示回答的微笑

What are you smiling at?
你笑什么?

sneer是什么意思：
v. 讥笑，嘲笑，冷笑
n. 讥笑，嘲笑，冷笑

There had something of a slouch and a sneer in his bearing.
他的脸上带着一副心灰意懒而又不屑一顾的神情。

The peer's queer peering is a sheer sneer.
同辈的不舒服的凝视是绝对的冷笑。

Chartered accounting is of ten sneered at. Were you aware of that?
特许会计是受人嘲笑的，你意识到了吗？