snigger
单词辨析：
普通用词，通常指因开心、愉快等而嘴角上扬、面带笑容。
The baby began to smile.
婴儿开始微笑了。
She smiled at him sweetly.
她冲他甜甜地微笑。
The winner was smiling broadly.
获胜者开怀大笑。
指低声轻笑或暗自发笑。
He chuckled and picked up his glass for another sip.
他轻声笑了起来，又拿起酒杯喝了一口。
He chuckled while reading the funny story.
他一面读着滑稽小说，一面暗自发笑。
What are you chuckling about?
你在偷笑什么？
指因觉得好笑、尴尬或紧张而傻傻地笑。
The girls were giggling when John passed by.
约翰走过时，姑娘们傻笑了起来。
The funny story made her giggle.
那个有趣的故事使她咯咯地笑了起来。
指在高兴等时咧嘴、露齿而笑。
The joke made him grin from ear to ear.
这则笑话逗得他笑得合不拢嘴。
He grinned happily.
他快乐地咧着嘴笑。
通常指因认为某事有趣而出声大笑。
The pupils are jumping and laughing in the playground.
学生们在操场上又跳又笑。
She laughed a hearty laugh while listening to Mike's jokes.
听着迈克的笑话，她开怀地笑着。
指不出声地偷笑，含讽刺、不尊重之意。
What are you sniggering at? It's a serious affair.
你偷笑什么？这是一件严肃的事。
I felt that I had been insulted and sniggered at.
我觉得我受到了侮辱和讥笑。
相关例句：
We tend to snigger at anyone or anything that suggests we take sex too seriously, let alone explore the potential for sex to be mind-altering.
任何将性爱太当真的行为都让我们窃笑不已，更别说去用性爱来改变心态。
Before you snigger at the immodesty, understand that P. Diddy is not talking about himself.
在你嘲笑这种自大之前，记住吹牛老爹不是在说他自己。
The focus is on the business rather than on the finance, which probably makes investment bankers snigger, Mr Foyston concedes.
其重点放在企业而非财务方面弗伊斯顿承认，这点可能会遭到投资银行家们的嘲笑。
How can I forget, with people sniggering behind my back?
我怎么会忘记呢？人们一直在我背后偷偷地笑话我。
'We know what that means,' Robert sniggered.
“我们知道那是什么意思，”罗伯特心里暗自好笑。
Suddenly, three schoolkids sitting near me started sniggering
3个坐在我附近的学童突然偷偷地笑了起来。