Grade of service
[计] 服务等级, 业务等级\\n[经] 服务等级(质量)
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
service
['sɝvɪs]
n. 服务，服侍;服务业;维修服务;服役;
vt. 检修，维修;向…提供服务;保养;满足需要;
adj. 服务性的;耐用的;服现役的;
serv服务+ice表名词，行为，状态 →服务
🗣️ 情景例句
sacrifices have to be made by one partner from time to time.
总要有一方必须不时做些牺牲。
Must be.
一定是。
It looks like a chicken. But I don't think chickens can swim.
看起来像只小鸡。不过我认为小鸡不会游泳啊！