Upgradation
升级；改善；提高
🗣️ 情景例句
The horse leaped a stream.
马越过小溪。
I couldn't help it.
我没办法。
When my mother had died after a tragic accident, he did not quickly recover from the shock and loneliness.
当时我母亲在一次事故中惨死，父亲未能很快从悲痛与孤独中恢复过来。