No, you sound different today.

没有，今天你的声音听起来不一样。

Then, please tell him that Zhao Li called.

这样好了，请转告他赵力来过电话。

We're organizing an informal party, and I'd like you to come.

我们计划组织一个非正式聚会，我想请你参加。

Are you sick?

你病了吗？

Hi. This si Peter from Dr. Alice's office.

嗨，你好，我是埃里斯诊所的彼得。

How much notice of cancellation is necessary to get my deposit back?

想把定金拿回来，要提前多长时间通知你才行？