若干研究已经发现了两个重要常量。Two significant constants have been found in a number of research studies.其值不变的量称为常量.A quantity whose value remains unchanged is called a constant.在无外力时,质心的速度是常量.The velocity of the center of mass is cons...
My emotional turmoil had drained me.纷乱的情绪让我心力交瘁。The usurers are leeches;they have drained us dry.高利贷者是吸血鬼,他们吸干了我们的血汗。Some of the energy intended for the photon is drained off by the recoiling atom.原来给予光子的能量有一部分为反冲原子所消耗.E...