Water makes up 50 to 70 percent of an adult's total body weight.

一个成年人体重的50%—70%由水组成。

T. Rex's huge legs and pelvis make up half this bruiser's total body weight.

雷克斯霸王龙巨大的双腿和骨盆占据了这猛兽全部体重的一半。

In fact, around twenty percent of the body's energy goes to feeding the brain, even though it only makes up two percent of our total body weight.

事实上，虽然大脑只占我们体重的2%，但人体大约20%的能量都用于供给大脑。