Sums
n. 算术题；总数（sum的复数形式）
🗣️ 情景例句
I'd love to come. But I have to be on duty this weekend night.
我是想过来，但我周末晚上得值班。
I have so much to do after I retire.
我在退休后有许多事要做。
Are these bags heavy? No, they're light.
不，是轻的。