lest
連詞
UK/lest/
US/lest/
定義 lest 連詞
Used to express the purpose of an action is to prevent something undesirable from happening.
以免；唯恐
He checked the doors and windows carefully lest there be any possibility of a break-in.
他仔细检查了门窗，以免有任何入室盗窃的可能性。
They spoke in hushed tones lest they wake the children.
他们低声说话，以免吵醒孩子们。
She always carries an umbrella lest she get wet in the rain.
她总是带着伞，以免在雨中淋湿。