您可以在系统中使用各种工具为自己设置离开的提醒，与纸制便笺相比，它们占用更少的空间，并且无论您在任何地方登录都可以看到它们。
Use the tools at your disposal to leave reminders for yourself on the system — they take up less space than notes on paper, and you'll see them from anywhere you happen to be logged in.
一些售价低于20美元，不到一磅重，并且不要占用太多空间。
Some cost under $20, weigh less than a pound and don't take up much room.
有时候，如果负载过重，连接会挂起，并且会占用连接表空间。
Sometimes, under load, connections hang around and take up connection table space.
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