Hidam
[计] 分层索引直接存取法
🗣️ 情景例句
I'm totally exhausted by the time I get home.
等我回到家，已经累得精疲力竭了。
I bought 3 pounds of flour.
我买了三磅面粉。
It contained $300 in pennies.
他坚持要店员点清那些硬币后他才离去。