进程是“密封”的，意味着它们不能被动态加载或者产生代码。
Processes are "sealed", meaning they cannot dynamically load or generate code.
地质学家对这个场地还没有进行详细的研究，因此还不能确保其地层有安全储存和良好的密封性。
The sites have not been fully studied by geologists as yet to make sure they are safe storage sites and well sealed.
经济萧条并不能使所有东西回归：现代银行建筑的密封窗已将人们“禁锢”并使其很难从中走出。
Not everything from the Depression can make a comeback: sealed Windows in modern bank buildings make it hard for people to jump out of them.
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