The aircraft is powered by three jet engines.这架飞机由三台喷气发动机驱动。Now, volunteers are designing a palo - powerd pedal - powered grain crusher.现在, 志愿者正在设计脚踏谷物碾磨机.Muscle contractions are powered by the chemical adenosine triphos...
人们使用科学术语，但并非很清楚其含义。People use scientific terms with no clear idea of their meaning.许多科学论文，即便不是大多数，都是以口头形式在科学会议上发表的。Many, if not most, scientific papers are presented orally at scientific meetings.物理学并非只是一门不能直接运用的纯科学。Phys...
Thursday : Watch Countdown or Brainteaser.周四:看益智类节目.In the end, the meeting was a sideshow to a political storm that broke Thursday...最终，那次会议成了星期四爆发的政治风暴的一个附属事件。Mr Hillman was snatched by kidnappers last Thursday.上周四希尔曼先...