A sharp tool, or bit, was hung from a rope and jerked up and down by men jumping on a spring-board.
粗绳子上挂着锐利的工具，即钻头，由踏板上跳跃的人把它拉起又放下。
2
It's feasible that some graduates may employ the job as a spring-board in order to receive the favorable treatment.
为了得到可观的待遇，一些毕业生把这当成是一个跳板也是可行的。
3
"Consumer confidence, which had rebounded strongly in late spring, has faded in the last two months," Lynn Franco, director of the Conference Board Consumer Research Center, said in a statement.