Necessariness
必要性
🗣️ 情景例句
She suffered terribly when her son was killed.
儿子被杀，她痛苦至极。
It's nothing.
小事情。
New York is built on a group of islands on the east coast of the USA at a point where several rivers flow into the ocean.
纽约市建立在美国东海岸的一群岛屿上，那儿是好几条河流入海的交汇点。