before unload

基本解释

Unload before stop the machine, or there will be left magnet. Next time when use, magnetize with accumulator cell or dry cell battery.
停车前要先卸去负载最后停车，如果带负载停车，可能引起剩磁，下次使用时要用蓄电池或干电池重新充磁。
At dinner, she was telling a story about her mother: “I was so angry when I put down the phone, I had to call a friend and unload before he came home so I didn’t dump it all over him.”
吃饭的时候，她给我讲了一段提到她母亲的故事：“每次我气急败坏一放下电话，我都要先找一个朋友电话骚扰一下倒倒苦水，不等到他回到家，我心里已经舒坦了，他也不会遭到罪受。”
found Yankees tickets, for instance, being sold for as low as $5 by ticket-holders eager to unload them before the season begins.
网站显示目前正有人以5美元贱卖扬基队的球票，他们急于在赛季开始前把这些票脱手。

He says KMV gave enough warning so that he could unload several loans at around par before most others caught on that firms like Bradlees and Mobilemedia were headed for bankruptcy.
FORBES: Default-risk bookies
It's clear Ballmer is giving up the fight on Vista, though the company will still try to unload as many copies of it as possible before Windows 7 is released, presumably around the end of 2009.
FORBES: CES 2009
They are trying to unload condos to avoid paying dues for several decades before they actually retire.
FORBES: Leadership