当我们到达苏珊家时,她非常热情。
当我们到达的时候,消防队员们正在灭火。
当我们到达那里时,我儿子指着灯说:“爸爸,看!”
When we got there, my son pointed at the lights and said, "Dad, look!"
Once we're there, we have to do the merge.
当我们到达这步时。
so we know how to do this, and we know this thing when it hit these stops, v2 the pressure with p2, and the volume was V2.
所以我们知道怎么计算,当活塞到达这两个挡板时,压强是p2,体积是。
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