The sides of the loch are almost perpendicular.湖岸几乎都是垂直的。Those that are aligned perpendicular to the plane are called axial hydrogens.与平面垂直定向的氢叫做直立氢.A perpendicular bisector of a chord passes through the centre and bisec...
Spencer waded through the debris of broken chairs and beer bottles.斯潘塞艰难地迈过一堆破椅子和碎啤酒瓶。I waded in to help, but got kicked to the ground.我本想插进去帮忙，结果却被踢倒在地。She tucked up her skirt and waded into the river.她撩起裙子蹚水走进河里。...
'I can't pass this up.' She waved the invitation.“我不能错过这个机会，”她挥舞着请帖说。Patroni waved his cigar in salutation and honked his horn twice.佩特罗尼挥动雪茄表示敬意,并且按了两下喇叭.Jessica caught sight of Lois and waved to her.杰茜卡看...
At these discussions he always takes a back seat and listens to the others talking.在这些讨论中,他总是退在后面,倾听别人谈话。He listens and waits for the narrator to explain more.他听著,等待讲的人进一步解释.She still listens to the tapes I made her.她还在听...
Lubrication reduces noise and wear.润滑作用能减少噪音和磨损.We shall require more lubrication oil this month.这个月我们需要更多润滑油.Sludge can also clog oil passages and prevent normal engine lubrication.油泥还会阻塞油路,妨碍发动机的正常润滑工作....