他是个拘谨的人,不爱多说话.He is very reserved. He does not say much.我的天性是很拘谨的.I'm really a very private person.玛丽说话时脸上露出了拘谨的神色.Mary spoke with restraint in her face....
There are four major disciplines in earth sciences, namely geography, geology, geophysics and geodesy.地球学又分为四大类, 即地理学, 地质学, 地球物理学和测地学.Why to always syare blankly ineffably , feel sadness namely next.为什么总是莫名的发呆,然后就是感到悲伤.O...
The visitor can ponder over the boomerangs used by aborigines at the time of Cook.来访者可以琢磨琢磨土著人在库克时期用的回飞镖.They would do well to pause and ponder upon their new responsibilities.人们最好还是停一停,好好地想一想自己所负的新责任.You should pause an...
The Doppler frequency can be obtained as a heterodyne or beat effect.由于外差或频差效应,能够得到多普勒频率.The doppler frequency is a function of the two scattering directions.多普勒频率是两个散射方向的函数.Doppler - sonar is a dead - reckoning system.多...