如果愿意的话,我们也可用幂级数法解题.We can solve it with the power - series method if we want.无穷级数的收敛性与发散性与此概念有关.Convergence and divergence of infinite series depend upon this concept.我们可删去两项或三项之后的级数.We may cut off the series after two o...
It seems the President has given way to pressure from the hardliners.总统似乎已迫于强硬派的压力而妥协了。The president has gone along with the hardliners lest they be tempted to oust him.总统同意了强硬派的意见，以免他们产生赶他下台的念头。The only victors in a hea...
他系住马,走进了小酒店.He tied up the horse and went into the inn.他拔下桅杆,把帆卷起,系住.He unstepped the mast and furled the sail and tied it.一条手帕巧妙地系住她们, 免得她们摔下.A handkerchief, cleverly knotted about them, prevented their falling out....