OMG!美语 Kick Back!

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大家好!怎么用美语说放松休息?kick back 放松How long have we been studying? When was the last time we actually left this library to go outside?咱们学习多久了?咱们上一次离开图书馆到外面去是什么时候?I can't remember. 7 or 8 hours? I need to go home.我不记得了。七八个小时以前?我得回家了。