' stood apart, with countenances of inflexible gravity , beyond what even the Puritan aspect could attain . "站在一旁, 他们脸上那种严肃刚毅的神情, 比清教徒们还 有过之而无不及.The artistic thing is, to unmask honest countenances!我承认,做起来是有困难的!She ...
Both variable orifices and electromagnetic controllers have been used with success.可变锐孔和电磁流量控制器都已成功地使用.Ground controllers will then fire the booster, sending the satellite into its proper orbit.然后地面控制人员将会发射推进器，把卫星送入正常轨道。...