Obviously, rocks only play the role of carrier of ore forming elements.

The second is to play the role of the market to prevent excessive commercial exploitation.

二是发挥市场作用,防止过度商业开发.

Having to pay and play the role of " calibration record " as " basis " and " criterion "

应重视发挥 “ 校准记录 ” 的 “ 依据 ” 和 “ 判据 ” 作用.

However, the three factors can play the role of protection is limited.

但上述的三重保障所能起到的作用却是有限的.

Some of his friends said he could not play the violin very well.

他的一些朋友说他无法把小提琴拉得很精。

Yes, I play the violin, but I want to do something different.

不，我会拉小提琴，但是我想尝试些不同的东西。

He began to play the violin one tune after another.

他开始一曲又一曲地拉起了小提琴。

Do you still play the violin now?

你现在还拉小提琴 吗 ?

Bill can play the violin and dance all at once.

Bill可以在拉小提琴的同时跳舞。

At home, I like to sing and play the violin.

在家我喜欢唱歌和拉小提琴。

Do you play the violin?

你会演奏小提琴 吗 ?

She could play the violin when she was five.

她五岁时便能拉小提琴了。

You may learn to play the violin in, say, three years.

你可以, 比如说, 在三年内学会拉小提琴.

I can no more play the violin than you can.

你不会拉小提琴,我也不会拉.

At weekend, We the same hobby group and play the violin together.

在周末, 我们参加一样的兴趣班,一起拉小提琴.

How many students in your class can play the violin?

你们班有几个学生能拉小提琴？

It takes patience to learn to play the violin.

想学会拉琴,你就要有常性.

Who is going to play to the hero of the play?

谁来演与男主角相配的女主角?

They tried to affiliate that play to its author.

他们试图追寻那个剧本的作者.

They picked the play to pieces.

他们把这出戏批评得体无完肤.

Traditional artforms play to a passive audience. Games require active participation.

传统艺术面向被动的大众, 而游戏需要主动的参与.