一种气体的密度the density of a gas有些密度大的物质容易让电流通过.Some dense substances allow electricity to flow through them freely.水银的密度比水大得多.Mercury has a much greater density than water....
the sound of pigeons cooing鸽子咕咕的叫声Pigeons navigate less accurately when the earth’s magnetic field is disturbed.地球磁场受到干扰时，鸽子的道航能力就会变得不准确。The new vicar's a Marxist that'll set the cat among the pigeons!新来的牧师是马克思...
Arranging a meeting with the hackers took weeks againoff - again email exchanges.通过几星期电子邮件往来安排见面,他们最终同意了.When she has a little spare time she enjoys arranging dried flowers...她稍有空闲便喜欢摆弄干花。When she has a little spare time...
He hied himself to the hospital.他赶紧去医院.He hied himself to the post office for his express mail.他赶紧去邮局取他的快件邮包.He hied himself to the post office.他赶紧去邮局....
Jerusha assured the young Hawaiian.耶鲁雅安慰年轻的夏威夷人.Hawaiian volcanoes are among the most thoroughly studied and systematically monitored active craters in the world.夏威夷火山是世界上研究得最透澈并且受到最严密监视的活火山之一.Today, thirty - one Hawaiia...