Grades
n. 分数；等级（grade的复数形式）
🗣️ 情景例句
About 9:30.
大约九点半。
How much is a one-way ticket to Beijing?
一张到北京的单程票要多少钱？
He was on his way to a lecture, when a tourist stopped him and asked him for directions.
他走在去听课的路上，此时一位游客拦住他问路。