较轻的推进器采用液态氢, 较重的采用自燃推进剂.The lighter version used liquid hydrogen, the heavier used hypergolic propellants.磷化氢是一种有毒气体,在空气中可以自燃.Phosphine is a toxic gas which ignites spontaneously in air.它们也可作为自燃点火成分,改进点火和重新点火性能.They also...
联邦法庭的一桩案件提前到星期三审理。A Federal Court case had been fast tracked to Wednesday.戴维总是星期三去学校接阿利斯泰尔。David always collects Alistair from school on Wednesdays.这位女士是上上个星期三从波士顿回来的.The lady returned from Boston Wednesday week....
They went on a ten-mile hike through the forest.他们做了一次穿越森林的十英里徒步旅行。I don't care to go on a hike.我不喜欢徒步旅行。...a 5-day hike into the interior.为期 5 天、深入内地的远足These little boys need someone to lead the way on their hike.这...
鲜艳的广告招贴画点缀着街道.Bright posters decorate the streets.他仔细端详避署旅游的招贴画, 免得见到熟人说话,露出他的不安.He studied the summer - resort posters, lest he have to acquaintances and expose his uneasiness.你知道那些城市免费门诊的招贴画 吗 ?You know those posters f...
Most species live off aquatic snails.绝大多数种类以吃螺为生。I don't know how she manages to live off her painting.我不知道她怎么能以画画为生.I'm going to live off campus if I can find somewhere cheap enough.要是能找到足够便宜的地方，我就不在校园里住了。...
A certain risk is involved when cereal grains are maturing in the field on the stalk.当谷物在田间茎秤上正在成熟时就蕴藏着一定的危险.If Brazier effect occurs on a stalk, it will bend after 25 % to 30 % of flexion.发生Brazier屈曲的茎在危险截面的屈曲程度为25%～30%...
We begin to reproach ourselves for not having been more careful.我们开始自责起来，怪自己不够小心。It was a jest rather than a reproach.这与其说是责备，还不如说是句玩笑呢。He looked at her with reproach.他用责备的目光看着她。...