It was really no wonder his mouth dropped open.

难怪他会惊讶得张大了嘴。

youdao

Appearing quite perturbed, her mouth dropped open like a petal from a flower.

看来那位女子感到被打扰了，她的嘴唇像花瓣一样撅了起来。

youdao

In the rare chance that there is a microorganism that can make you sick on the exact spot where the food dropped, you can be fairly sure that the bug is on the food you are about to put in your mouth.

极少数情况下，有一种微生物可以在食物掉落的那一刻让你生病，你可以十分确定这种细菌就在你准备放进嘴里的食物上。

youdao

My mouth just dropped open.

NEWYORKER: Battle Plans

The hearing was told that on one occasion the scam failed because a player swallowed the capsule while a player dropped it from his mouth on another.

BBC: Richards hit by damning judgement

According to a report from Fox 10 News in Phoenix, Marin then dropped his head into his hands and appeared to place something in his mouth then took a sports drink bottle from a briefcase and drank from it.

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