jump-down

基本解释

Known as the forest transition, this can be visualised as a curve in the shape of a ski-jump, first sloping down steeply and then turning up gently as the forest creeps back.
这一过程被称为森林转变，它可被形象地表现为一条跳台滑雪型的曲线：一开始陡然下滑，之后随着逐步还林，曲线缓缓上升。
On Monday, China Telecom reported a jump in full-year profit after a write-down hurt year-earlier results.
周一，中国电信宣布全年利润大幅增长，其上年同期业绩因冲销而受损。
On Monday, China Telecom reported a jump in full-r profit after a write-down hurt r-earlier results.
周一，中国电信宣布全年利润大幅增长，其上年同期业绩因冲销而受损。

Unemployment claims jump up and down week-to-week for a variety of reasons.
FORBES: Too Soon To Buy The Dip In This Market
President Bush has warned the Senate against "loading" up the bill because it would slow down the effort to jump-start the economy as soon as possible.
NPR: What the Fed Rate Cut Means for Consumers
If they jump up and down and say we're against this - Democrats and the Republicans who are against it - and yet still vote to give the president the money he's asking for, would it be far as to call the people in that position spineless or feckless?
NPR: Troop-Surge Opponents Mull Options