Lfu
最少使用算法
🗣️ 情景例句
You think you've got what?
你想你已经拍齐了什么？
A friend in need is a friend indeed.
患难朋友才是真朋友。
On his arrival he was sold to a farmer and worked in the fields.
一到美国，他就被卖给了一个农场主，到地里干活。