be closed

基本解释

When the script ends or when a connection is about to be closed, if you have an outstanding transaction, PDO will automatically roll it back.
当脚本结束时，或者当一个连接即将被关闭时，如果有一个未完成的事务，那么 PDO 将自动回滚该事务。
If you open the connection from within a function, and only store the variable in a local variable, the connection will be closed when that function returns.
如果在一个函数中打开连接，并且只将句柄存储在一个本地变量中，那么当函数返回时，连接将被关闭。
As quantum hackers continue to put systems through their paces, such loopholes will be closed—as these now have been—and the systems become more secure.
随着量子黑客们继续考察系统的防护能力，这些漏洞将被关闭——就像现在所做的——系统也变得更加安全。

If they approved the constitution without slavery, then Kansas would be closed to new slaves.
So the influx of ions from the outside of the cell to the inside of And you can think of ion channels as being gated, by gated it means the gate can be closed and no ions are going through, as in this case here.
下面以离子从细胞外部流入内部,你可以把离子通道想象成是有闸门的，也就是说闸门可以关上,这时没有离子能通过，就像这种情况。
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The system can be an open system, or it can be a closed system, or it can be isolated.
系统可以是开系，可以是闭系，或是孤立系。
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Assouline declares that business is so good, even in these tough times, that membership will soon be closed.
FORBES: Fish and Game