If a company uses a just-in-time system (often written JIT), it makes or buys goods only a little before they are needed, so it does not keep big piles of things in a store room. The idea is: the parts arrive, the workers use them, and the finished thing goes out — without sitting around for weeks.

If a company uses a just-in-time system (often written JIT)如果一間公司用just-in-time系統(常寫成JIT) it makes or buys goods only a little before they are needed它只會在快要用到之前才生產或購買東西 so it does not keep big piles of things in a store room所以不會在倉庫裡堆一大堆貨 The idea is: the parts arrive, the workers use them, and the finished thing goes out這個概念是零件送到、工人拿去用、成品就出貨 without sitting around for weeks不會放在那邊擺好幾個星期

Though actually, it is clever when everything runs smoothly, and painful when a ship is late or a factory stops, because there is no spare pile to fall back on.

Though actually, it is clever when everything runs smoothly不過當一切都順利運作時這個做法很聰明 and painful when a ship is late or a factory stops但當船delay或工廠停工時就會很痛苦 because there is no spare pile to fall back on因為沒有多餘的存貨可以靠

People also stretch the same phrase in computing: a just-in-time compiler writes machine code at the last moment, when the program needs it, rather than doing all of that work in advance.

People also stretch the same phrase in computing大家也把同一個說法延伸用到電腦領域 a just-in-time compiler writes machine code at the last moment, when the program needs ita just-in-time compiler會在程式真正需要的那一刻才寫出機器碼 rather than doing all of that work in advance而不是事先就把所有工作都做完

In everyday English, just in time (no little lines between the words) simply means “almost too late, but we made it.” The little lines mark the factory idea as a set term.

In everyday English, just in time (no little lines between the words)在日常英文裡just in time(單字之間沒有連字號) simply means "almost too late, but we made it."意思單純是「差一點來不及,但還是趕上了」 The little lines mark the factory idea as a set term那個連字號標記的是工廠概念這個固定用語