Needlessness
[n. 不必要；多余
🗣️ 情景例句
I think we should take care of the environment, so that we have something to leave for our children.
我觉得我们应该保护好自然，以便将来能给我们的子孙后代留下一些东西。
Is there any discount for the USA Railpass?
火车通行证有折扣吗？
I didn't know he was the richest person in the world.
我不知道他是世界上最有钱的人。