她用手捂着嘴。用英语怎么说？

她用手捂着嘴。

She clamped her hand against her mouth...

she

pron. 她，它；

例句
Her lover walked out on her after she had aborted their child.
她的情人在她打掉胎儿后甩了她。

clamped

v. 夹紧，夹住( clamp的过去式和过去分词 )，紧紧抓住，紧夹住，被抓住；

例句
Simon finished dialing and clamped the phone to his ear...
西蒙拨完号，把听筒贴在耳边。

her

pron. (she的宾格)她，(she的所有格)她的，她，指某个国家，（一艘）船；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

hand

n. 手，协助，帮助，（工具等的）把，柄，掌管；vt. 传递，交给，搀扶，支持；

例句
His hand brushed against hers; it could have been either accidental or deliberate.
就在有意无意间，他的手轻轻拂过她的手。

against

prep. 反对，对…不利，紧靠，以防；

例句
His hand brushed against hers; it could have been either accidental or deliberate.
就在有意无意间，他的手轻轻拂过她的手。

mouth

n. 口，出入口，传闻；vt. 装腔作势地说，喃喃地说，心不在焉地说，言不由衷地说；vi. 装腔作势说话；

例句
She stood looking at Carmen with her mouth agape.
她站着，张大了嘴看着卡门。