Mr.Obama stood between his two predecessors Saturday and said they have answered his call to coordinate efforts to involve more Americans in helping Haiti recover and rebuild.
VOA: standard.2010.01.16
All right? The first one is, that test has to involve-- shouldn't have to, the value of some variable.
好不好?第一件事是,循环开始的测试必须必须-不是一定,一些变量的值。
All right. So, so far we've looked only at molecules that involve atoms that have only s orbitals in them.
好,目前为止我们看的,分子都仅仅包含了s轨道。
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