On his desk is a mass of books and papers.他的书桌上有大堆的书籍和文件。In the spring, the meadow is a mass of daffodils.春天，草地上开满了黄水仙。Only with mass direct action will we obtain such change.只有采取大规模直接行动，我们才会取得这样的改变。...
He recounted how heavily armed soldiers forced him from the presidential palace.他讲述了自己是怎样被全副武装的士兵从总统官邸里赶出来的。Shortly afterwards, cuts in defence spending forced the aerospace industry to retrench.不久之后，国防开支的削减迫使航空航天业紧缩开支。T...
如果你用喷雾的形式为树浇水, 请远离附近的输电线.If you spray a tree, keep the water from nearby powerlightspower lines.数值模拟比较准确地模拟了高压旋流喷雾的涡旋现象.Numerical simulation also clearly demonstrates the swirling phenomena of the high pressure swirl inj...