1.leap up 跳起； 突然从座位上起身

Hundreds and hundreds of salmons leap up the falls.
数以百计的鲑鱼跳向瀑布。

Should we just make the leap up?
我们应否虚构由个体一跳就跳到总体?

2.pass down 把…一代传一代，使流传

This title will only pass down through the male line.
这个头衔将只能传给男性后裔。

However, even solid foods will pass down the tube with the aid of gravity.
但是,在重力作用下, 即使是固体食物也可通过导管。