Both melody and bass could have had a triplet but he chose to have the duple in the bass — the triple up above.

旋律和低音部都可以运用三连音，但是他选择低音两拍，高音三拍。

If you've been card dead in the first few levels you may only have as many chips as what you started with, or you may have been lucky enough to double or triple up early on.

如果你在最初几个级别没有拿到任何好牌，那么可能你手中的筹码和起始筹码差不多，或者，你的运气很好，早期就翻了2倍或3倍。

We have been working with triple integrals and seeing how to set them up in all sorts of coordinate systems.

我们目前已经学习了三重积分，以及如何在各种坐标系中建立它们。