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....
Biologists need to compare xerophyte and hydrophyte生物学家需要对比旱生植物和水生植物。Hydrophyte A plant found growing in water or in extremely wet areas.水生植物:是生长在水中或是极端潮湿的环境中的植物.A new type of ecological floating bed was developed that c...