曝光效率更高，能量足，机器重量更轻。
Exposure is more efficient, energy foot, machine lighter weight.
这很难找到一个窗口的机器重量轻于46磅，而这样的机器也只能够凉快相当小的房间(150平方英尺或以下)。
It's tough to find a window unit that's lighter than 46 pounds-and a machine like that would be able to cool only a fairly small room (150 square feet or less).
这很难找到一个窗口的机器重量轻于46磅，而这样的机器也只能够凉快相当小的房间(150平方英尺或以下)。
It's tough to find a window unit that's lighter than 46 pounds-and a machine like that would be able to cool only a fairly small room (150 square feet or less). What makes them so heavy?
这很难找到一个窗口的机器重量轻于46磅，而这样的机器也只能够凉快相当小的房间(150平方英尺或以下)。
It's tough to find a window unit that's lighter than 46 pounds-and a machine like that would be able to cool only a fairly small room (150 square feet or less).what makes them so heavy?
这很难找到一个窗口的机器重量轻于46磅，而这样的机器也只能够凉快相当小的房间(150平方英尺或以下)。
It's tough to find a window unit that's lighter than 46 pounds-and a machine like that would be able to cool only a fairly small room (150 square feet or less).what makes them so heavy?
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