很少有鸟类会在镜头面前梳理自己的羽毛。Rare birds preen themselves right in front of your camera.燕雀大约在12个星期大小的时候开始换羽毛。Finches start to moult at around twelve weeks of age.拔羽毛必须干净利落。The feather must be removed with a straight, firm pull....
"What ails you?" he asked.“你哪里不舒服？”他问道。'What ails you?' he asked.“你哪里不舒服？”他问道。Measles ails the little girl.麻疹折磨着这个小女孩。He will not concede what anything ails his business.他不允许任何事情来干扰他的工作.A full-scale debate is u...
A linearization method to design biorthogonal cosine BCM filter banks is proposed.介绍了一种用于设计双正交余弦调制滤波器组的线性化方法.We derive the addition formulas for sine and cosine from the arithmetic of complex numbers.用复数算术推导了正弦,余弦的加法公式.L...
指挥官下令把炮装上牵引车开出去.The commander ordered the troops to limber up and move out.报告的话题是关于我们制造开动牵引车(拖拉机)所用的燃料.It is about running our tractors on fuels we grow.大型半挂车和牵引车. 可调整挂车转角.Large semitrailer and tractor. Angle of trailer ...