不知为什么他讲这些故事时一点都不害怕。Somehow he tells these stories without a note of horror.如果当时我再多说一点的话，结果或许会不一样。Things might have been different if I'd talked a bit more.所有提交的文件必须真实且易于查证，这一点很关键。It is crucial that all documents pre...
The car slid down the steep gradient into the river.汽车滑下陡峭的斜坡掉入河中.This indicates a hydrodynamic condition with a very marked potentiometric gradient.这说明水动力条件具有很明显的位能梯度.4 gradient arrays marked A, B, C and D were set up.布...