By measuring the motion of the galaxies in a cluster, astronomers can infer the cluster's mass.通过测量星系在一个星系团内的运动,天文学家们可以推定这个星系团的质量。They turned their telescopes towards other nearby galaxies...他们把望远镜转向附近其他星系。Space fli...
It allows nicotine to diffuse slowly and steadily into the bloodstream.它能使尼古丁平稳缓慢地渗透到血液里。Once in the bloodstream, the bacteria adhere to the surface of the red cells.细菌一进入血液里，就附着在红细胞表面上。They injected the drug directly in...
While I struggle through life, she lands on her feet.在我挣扎过活的时候，她却运气亨通。He arrives in his biplane and crash lands it in a tree.他驾驶双翼飞机到达，在一棵树上紧急降落。His lands were poorly farmed.他的田地耕种不当。...
Then the treacherous North Atlantic struck, with hail, rain, lightning and gusting wind.这时,气候变幻莫测的北大西洋出现了冰雹 、 大雨 、 闪电和狂风.Jeff: Sometimes, the partiality and miscarriage of justice are dis - gusting too.杰夫: 有时, 裁判的不公平和误判也...
For those with a blurry eye or an unsteady hand, there is the Envenomed Bow.为了那些长了一双二五眼或一双筛糠的手的人, “淬毒弓”应运而生了.He poured coffee into the mugs, and with an unsteady hand, held one of them out to David.他把咖啡倒进杯里，然后一只手颤巍巍地端了一杯...
抽气泵的排气管应该导向室外空旷处或导向一座通风橱.The pump exhaust should lead to the open air or a fume hood.设计了一套硅片专用真空夹紧装置,包括夹紧装置和微型无油真空抽气泵.A vacuum clamp equipment used for holding Si wafer is designed in this paper....