关上窗户以防止风进来。

Close the window to keep the feng out.

请关上窗户，外面太吵了。

Please close the window, it's too noisy outside.

关上窗户以阻止通风气流进来。

Close the window to stop the draught from coming in.

请关上窗户，外面的噪音太吵了。

Please close the window; the noise outside is too loud.

关上窗户以防止灰尘使你窒息。

Close the windows to prevent the dust from chocking you.

请关上窗户，外面的吵闹声太大了。

Please close the window; the noise outside is too loud.

我们需要关上窗户，以防止家蝇进入。

We need to close the windows to keep the housefly out.

这里绝对冷——我能关上窗户吗？

It's absolutely freezing in here - can I close the window?

现在，关上窗户，让原野安静下来吧；

Now close the windows and hush all the fields;

他忘了关上窗户。

He forgot to shut the window.