N a security measure in which those inside a building such as a prison, school, or hospital are required to remain confined in it for a time 防范禁闭(期) [美国英语]
many schools remained under lockdown yesterday
You can use private properties to really lock down our classes.
可以使用 private 属性来真正锁定类。
You should use the functionality it provides to help lock down your application.
您应该使用它所提供的功能来帮助锁定您的应用程序。
Notice some of the details — shoes lock down inside of the box for easy portability.
请注意这些细节：鞋子可以固定在鞋盒底部以方便携带。
"We will set new standards, expand our cooperation with Russia, and pursue new partnerships to lock down these sensitive materials."
VOA: standard.2010.04.06
Now what you want to do is lock down the materials so they can't get to them."
VOA: standard.2010.08.06
"The things that we're doing to lock down special nuclear materials, the things that we're doing to reduce the number of nuclear weapons helps go to preventing that from ever occurring again."
VOA: standard.2010.08.06
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