Equimolecular counter diffusion

equimolecular

a. 等分子数的, 克分子数相等的\\n[医] 等分子的

counter ['kaʊntɚ]

n. 柜台;对立面;计数器;（某些棋盘游戏的）筹码; adj. 相反的; vt. 反击，还击;反向移动，对着干;反驳，回答; vi. 逆向移动，对着干;反驳; adv. 反方向地;背道而驰地;

count(to count)+er→筹码；柜台；计算器

diffusion [dɪ'fjʊʒən]

n. 扩散;<物，化>扩散;传播;<人>（文化等的）传流;

dif分开+fus流，泻+ion名词后缀→ 普及；弥漫

I've never been more serious.

我从来没有比现在更认真了。

The roof has leaks in it,and the front step need to be fixed.

房顶有漏缝，并且前面台阶需要修理。

Pierre and I borrowed the money and bought the necklace. During the next ten years we both worked day and night to pay back the money we had borrowed. That's why I now look so old. Well, after all these years we've at last paid back all the money.

我和比尔借了一笔钱，买下了那条项链。在后来的10年时间里，我们两人为了偿还这笔借款不分昼夜地干活。这就是为什么我现在看起来这样老的原因。好了，过了这些年之后，我们终于还清了全部借款。