Thousands of meteorites penetrate Earth's atmosphere and fall harmlessly to the ground each year.每年,几千块陨石穿过地球大气,掉到地面上,并不会造成什么伤害.One theory about the existence of extraterrestrial life rests on the presence of carbon...
She was already a keen and experienced sailor, having crewed in both Merlin and Grayling.在“默林”号和“格雷林”号上工作过以后，她已经是一名头脑敏捷、经验丰富的水手了。Rafts are crewed by ten men who use single bladed paddles.救生艇上有十名船员,全都使用单叶桨.They cannot be ...
60 percent of the sample answered negatively.抽样调查中60％的接受调查者作出了否定回答。Stein shook his head slowly, negatively.斯坦慢慢摇了摇头，表示否定。Electrons are negatively charged with electricity, protons are positively charged.电子是带负电荷的, 质子是带正电荷...
Bunbury flopped down upon the bed and rested his tired feet.邦伯里重重地倒在了床上，让他疲惫的双脚休息一下。O'Leary made to open the door, but Bunbury forestalled him by laying a hand on his arm.奥利里想去开门，但是邦伯里抢先一把摁住了他的胳膊。Bunbury groped in h...