The electron microscope uses a beam of electrons to produce images at high magnifications.电子显微镜利用电子束形成高倍影像。And what is more: The technique can be used with all objective magnifications is no restriction.特别提示: 这种技术能适用于各种物...
A steamer takes on a pilot before coming into a strange harbour.轮船进入陌生的港口前要雇用引航员。The steamer calls at several ports along the way.一路上,汽船在好几个港口停靠。One summer, pumping stations such as steamer general, maintenance, operatio...
Glaciers are moving rivers of ice.冰河是犹如河水般流动的巨大冰体。Glaciers gouged out valleys from the hills.冰川把丘陵地带冲出一条条山谷.It has ice and snow glaciers, rainforests and beautiful mountains.既有冰川, 又有雨林和秀丽的山峰....
His success was all the sweeter for being at the expense of Europe's most admired team.他击败的是欧洲最受人崇拜的球队，这让他更有成就感。Sap passes right through the aphides'bodies, only getting a little thicker and sweeter.汁液直接流过蚜虫的身体...