蜂鸣器突然相应地发出了一声响亮的长鸣。The buzzer suddenly responded in a long blast of sound.蜂鸣器在8点钟时响了.The buzzer went off at eight o'clock.你想讲话的时候就按蜂鸣器.Press the buzzer when you want to talk....
弗兰妮把食指放在嘴唇上让她安静。Frannie shushed her with a forefinger to the lips.他用拇指和食指捏着笔。He took the pen between his thumb and forefinger.他的食指扣住扳机,然后又松开了.His index finger tightened on the trigger but then relaxed again....