在许多情况下，管理员有时可能几个星期都不接触某个特定的环境，因此，期望他们能够记清每一个具体环境的每一次细微变动是不合理的。
In many cases, administrators might not touch a particular environment for several weeks at a time, and so it is not reasonable to expect them to remember every nuance of every individual environment.
在任何接触性传染病的传播中，每一次传染都涉及两类人，一类是已患病者，一类是未患病者。
In the spread of any contagious disease, each act of infection has two parties, one who already has the disease and one who does not.
每一次当一幅图像接触到窗体的任何一边时，在窗体标题中显示一个计算器。
Displays a counter in the forms caption each time an image touches any side of the form.
每一次当一幅图像接触到窗体的任何一边时，在窗体标题中显示一个计算器。
Displays a counter in the forms caption each time an image touches any side of the form.
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