pull out ,pull through,pull over,pull up的意思分别是?最后有例句,

pull out n.拔(撤离,折叠的大张插页,飞机进场重新飞起)例句与用法:The project became so expensive that we had to pull out.这个计画耗资太大,我们只好退出.A car suddenly pulled out in front of me.一辆汽车突...