Saturn was to launch the 15 th flight, a Moon orbital mission.第15次飞行利用萨杜恩将飞船送人月球轨道.Explanation: What does the surface of Saturn's ice - spewing moon Enceladus look like?说明: 土卫二,这颗会喷出冰的土星卫星表面长什么样子?Planetary scientist...
它减少了气锁的机会.This reduces the chance of vapour lock.基本装置: 气锁的回转阀,低压大风量机.Basic device: An air - lock rotary valve and a high - volume and low pressure blower.膨胀节是防泄漏的,带有疏水,且与相连的设备之间具有气锁密封性.Expansion joints are leak proof and...
打谷时,很难得到干净的谷粒.It was difficult to obtain clean grains when the crop was threshed.他们正在用打谷机给小麦脱粒.They are separating the grains from wheat with a threshing machine.她发现孙子正在打谷场上操练,便下了驴,当着战士们的面,上去一把揪住地老鼠的衣顿,骂了两句,用鞭杆朝他脑门敲了一 记 ...
42 As the touchstone tries gold, so gold tries man.42试金石试金, 黄金试人.A man’s deed is the touchstone of his greatness or littleness.行动是一个人伟大或者渺小的试金石。Job security has become the touchstone of a good job for many employees.工作稳定...
Dikes protected the lowland from incursions of the sea.堤防保护低地免于海水流入.Habitat and Ecology: In lowland broad - leaved evergreen forest. Flowering: Aug.生境与生态: 攀援于低海拔常绿阔叶林的乔木或灌木上. 花期: 8月.Highland Lowland is a carpet and a cof...