at least
至少
例句与用法：
She's completely homeless at least I have my parents to fall back on.
她是真正无家可归--我至少有父母可依靠。
The mark-up on food in a restaurant is usually at least 100%.
餐馆食物的成本加价率通常至少是100%.
She may be slow but at least she's reliable.
她迟钝是迟钝，但无论如何她很可靠。
He should at least have come to say good-by.
他至少也该来道个别(然而却没来)。
To go abroad to study, you should at least master the language.
要到国外读书，你最起码要掌握那种语言。
We should brush our teeth at least twice a day.
我们每天应该至少刷两次牙。
I have to mop the kitchen floor at least once a day.
我每天至少要把厨房地板擦洗一次。
He has been there at least twice.
他至少去过那儿两次。
至少
He smoked at least half a packet of cigarettes a day.
他每天至少抽半包烟。