New Words：

less [les] 较少的；更少；更小；little的比较级
least [liːst] 最少的；最少；最小；little的最高级
at least 至少

Sample Sentences：

In less than a year, I'll speak good English.
How much do you want to spend on books? Less than 100 yuan.
Day after day, there were less and less leaves on the tree.

Most family now own at least one car.
At least ten people were killed in the crash.
It takes at least an hour to get home from work.

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