After all, everyone is responsible for building and keeping it.
毕竟,每个人都有责任建立和维护它。
Losing weight is difficult, and keeping it off may be even harder.
减轻体重难,保持就更难。
KF: Why do some people have such a hard time losing weight and keeping it off?
KF:为什么人们减肥、保持苗条总是这么艰难?
The company says it is simply keeping a database of Wi-Fi hotspots and cell phone towers near the user's location.
VOA: special.2011.05.02
What's this thing doing? It's walking along the list looking for the smallest thing in the back end of the list, keeping track of where it came from and swapping it with that spot in the list. All right?
这是在做什么?是在遍历列表,找列表后端最小的元素,跟踪它从哪里来的,然后同当前点的元素交换,明白了么?
Isn't it difficult being a mother and a professor at the same time and keeping a balance between the two?
同时做母亲和教授是不是很困难呢?两者之间取得平衡不容易吧?
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