You must develop the muscles of your speech organs to produce unfamiliar sounds.

所以你必须训练和发展你的发音器官（声带、舌、口、鼻腔等）的肌肉，以便发出陌生的（另外一种语言）声音。

How did you like last night's party?

喜欢昨晚的聚会吗？

That's quite all right.

没关系。

I am 60 years old and siingle.

我六十岁了，仍然单身。

Competition between bidders for this valuable painting has been keen.

拍卖时各出价对这幅名画竞争很激烈。

Some young couples get married on that day too.

一些年轻的夫妇也在这一天结婚。