Arithmetic series

arithmetic [ə'rɪθmətɪk]

n. 算术，计算;算法;

arith数学+met+ic...术 →算术

series ['sɪriz]

n. 系列，连续;串联;（广播或电视上题材或角色相同的）系列节目;级数;

ser(join)+ies(名词后缀)→连续；系列；丛书

Listen, Richard,doing aerobics for an hour is a lot different than lifting weights.

听着， Richard，一小时的有氧运动可与举重大不相同。

I'm very well, and you?

我很好，你呢？

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。