n. 向上的斜坡;
vt. 提升;使(机器、计算机系统等)升级;提高(设施、服务等的)档次;提高(飞机乘客、旅馆住客等)的待遇;
up向上+grade步,级→向上升级→上升,升级
🗣️ 情景例句
I've never heard such a pile of crap in my life!
我这辈子从来没听过如此胡说八道!
Lava flowed out of the crater.
喷火口流出了熔岩。
Imagine their surprise and delight when they broke open the packing cases and found that the fourth engine was sweet as honey -- still in perfect condition.