Upgradation
升级；改善；提高
🗣️ 情景例句
He visited with Grandma and me in Florida
他到Florida看过祖母和我
That's not like him.
那不象是他的风格。
After entering the narrow gap on the plateau, they climbed down the steep sides of the cave until they came to narrow corridor.
他们从高原上的窄缝进去，顺着笔直陡峭的洞壁往下爬。来到一条狭窄的走廊上。