Students use forums to chat, play games, and solve problems together at no cost, or they can pay a few hundred dollars to take courses with trained teachers.
学生们可以在论坛上聊天、玩游戏、一起解决问题，不需要任何费用，或者他们可以花几百美元参加受过培训的教师的课程。
Players pay for play time or virtual goods within the games, and the social networks take a cut of the sales.
玩家需要为游戏时间或游戏里的虚拟商品付费，社交网络公司则从销售额中提成。
This may or may not be linked with other pay for play models.
这种方法可以，也可以不与其他付费游戏模式相联。
To get music out, bands had to takeout print advertising, pay DJs to play their records, sign unfairdistribution contracts, or tour and sell enough albums to reach somekind of critical mass.
为了推广音乐，乐队不得不跑出去张贴广告，给电台DJ 钱叫他放你的唱片，签订不公平的分配合约，或者巡演去争取那些挑剔的听众，而卖出足够的唱片。
Sometimes they may play to passers-by in the street or subway so that they can earn some extra money for themselves or to pay for their instruments.
有时他们可能对街上或地铁的路人表演，这样他们可以为自己或支付乐器赚一点额外的钱。
Pay full attention to what the other are saying. Don't read a book, play computer games or do house work while the others are trying to say something.
当别人说话时，仔细聆听。千万不要爱他人与你交谈时候，玩电脑游戏或做家务。
Sometimes they may play to passers-by in the street or subway so that they can earn some extra money for themselves or to pay for their instruments.
有时他们可能在大街上或地铁里为过路人演奏，这样他们可以为自己或自己要买的乐器多挣一些钱。
Sometimes they may play to passers-by in the street or subway so that they can earn some extra money for themselves or to pay for their instruments.
有时他们可能在街上或地铁里为过路人演奏，这样他们可以为自己或自己要买的乐器多挣一些钱。
Sometimes they may play to passers-by in the street or subway so that they can earn some extra money for themselves or to pay for their instruments.
有时他们可能在街上或是地铁内为过路人演奏，这样他们可以为自己或他们要买的乐器多挣一些钱。
You can draw, or play games, or go to pay our water and electricity.
你可以画画，做游戏或者把茶几上的水电费付了。
Viewing Angle and it's passageway or viewing channel play an important roll in holography, but researches have not pay enough attention to these concepts for long time.
视角与视角通道是全息摄影非常重要的概念，但它一直未受到应有的重视和深入全面的研究。
Sometimes they may play to passers? By in the street or subway so that they can earn some extra money for themselves or to pay for their instruments.
有时他们可能在街上或地铁里为过路者演奏，这样他们可以为自己或自己要买的乐器多挣一些钱。
Sometimes they may play to passers by in the street or subway so that they can earn some extra money for themselves or to pay for their instruments.
有时他们可能在街上或地铁里为过路者演奏，这样他们可以为自己或自己要买的乐器多挣一些钱。
Sometimes they may play to passers by in the street or subway so that they can earn some extra money for themselves or to pay for their instruments.
有时他们可能在街上或地铁里为过路者演奏，这样他们可以为自己或自己要买的乐器多挣一些钱。
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