Spillage is liquid (or small loose stuff like grain or powder) that has come out of its container by accident, and also the act or the fact of that happening.

Spillage isspillage就是 liquid液體 (or small loose stuff like grain or powder)（或穀物、粉末這類小顆粒的東西） that has come out of its container by accident不小心從容器裡漏出來的，and also the act or the fact of that happening也可以指「漏出來」這件事本身。

The everyday word is 'spill' — you say 'there's a spill in aisle four'. 'Spillage' is the same idea in the register of rules, forms and warning signs: supermarket staff notices, cleaning instructions, insurance documents, safety reports. That is the useful thing to know about it — the meaning is ordinary but the word is not, so using it in casual talk sounds oddly official, which some people do on purpose as a joke.

The everyday word is 'spill'日常用字是「spill」——you say 'there's a spill in aisle four'你會說「there's a spill in aisle four」（第四排走道有東西灑出來了）。'Spillage' is the same idea「spillage」講的是同一件事，in the register of rules, forms and warning signs但用在規章、表格、警示牌這種正式場合：supermarket staff notices, cleaning instructions, insurance documents, safety reports像超市員工公告、清潔規範、保單、安全報告。That is the useful thing to know about it這是關於它最實用的一點——the meaning is ordinary but the word is not意思很平常，但用字不平常，so using it in casual talk sounds oddly official所以平常聊天用這個字會顯得很正式，which some people do on purpose as a joke有些人反而故意這樣用來開玩笑。

It works both uncountably ('clean up any spillage immediately', 'the mat prevents spillage') and countably ('two spillages were reported last month'), with the uncountable use more common. It is used for the tiny and the huge alike: spillage from a coffee cup, and oil spillage from a tanker — though for the very large events people usually say 'oil spill'.

It works both uncountably這個字可以當不可數名詞用 ('clean up any spillage immediately', 'the mat prevents spillage')（像「clean up any spillage immediately」「the mat prevents spillage」） and countably也可以當可數名詞用 ('two spillages were reported last month')（像「two spillages were reported last month」），with the uncountable use more common不過不可數的用法比較常見。It is used for the tiny and the huge alike小事大事都能用：spillage from a coffee cup咖啡杯灑出來的一點水，and oil spillage from a tanker到油輪漏油——though for the very large events people usually say 'oil spill'不過真正的大型漏油事件，大家通常會說「oil spill」。