他的阿拉伯文没有他的英语好，但是足够用了。
His Arabic was not as good as his English, but serviceable enough.
如果我们把时间看做最有价值的商品，那我们的目标应该是足够用的时间，而不是更多。
If we view time as the most valuable commodity, then our goal should be to do enough, not more.
这两个脚本中的命令足够用于连接一个任意大小的网络。
The commands in these two scripts are sufficient to connect a network of any arbitrary size.
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