The D-series’s twin tails are, in total, 70% lighter than a 737’s single one.
D系列的双垂尾总量和比737的单垂尾轻70%。
2
If I integrate the concentration of smoke, which means the amount of smoke per unit volume over d, I will get the total amount of smoke in d, except, well, let's see.
如果对烟雾的浓度积分，浓度就是区域d中，单位体积的烟雾的量，我们就得到了烟雾的总量。
3
About 30% of the screens outside the U.S. are showing the picture in 3-D, according to distributor Twentieth Century Fox; those have generated 64% of the movie's $666.7 million international total.