n.千克( kilogram的名词复数 );
例句:
Each passenger is allowed 20 kilograms of baggage.
每位旅客准许携带20公斤行李.
I am 65 kilograms heavy.
我重六十五公斤.
Every tonne of coal contains, on average, 30 kilograms of nitrogen.
每吨煤平均含30公斤氮.