adj. 最小的;最少的( little的最高级);最不重要的,地位最低的
adv. 最少,最小
n 最小;最少量
It´ll cost at least 500 dollars.
这东西至少要花500元。
At least he knew right from wrong.
至少他明白是非。
At least they died happy.
至少他们死时很幸福。
She must be at least 40.
她至少应该有40岁了。
It´ll take a year, at the very least.
这至少需要一年时间。