the rainfly
The rainfly kept the tent dry during the storm.
外帐在暴风雨中保持帐篷干燥。
帐篷门帘
canvas flap at the entrance of a tent
flap consisting of a piece of canvas that can be drawn back to provide entrance to a tent
He pulled the rainfly aside and went into the tent.
他把帐篷门帘拉到一边，走进帐篷。
用法提示：rainfly 是名词，指帐篷入口处可掀开的帆布门帘，在句中作宾语。
I could see the lake through the open rainfly.
透过敞开的帐篷门帘，我能看到湖面。
用法提示：rainfly 是名词，作介词宾语，表示帐篷入口处的门帘。
Please close the rainfly before the rain starts.
下雨前请把帐篷门帘拉上。
用法提示：rainfly 是名词，作动词宾语，指帐篷入口的帆布门帘。
The rainfly kept the tent dry during the storm.
外帐在暴风雨中保持帐篷干燥。
We set up the rainfly over the sleeping area.
我们在睡觉区域上方搭起雨棚。
The rainfly of my tent is waterproof.
我的帐篷外帐是防水的。
grammar · medium
易错句子You should rainfly the tent before it rains.
正确表达You should put up the rainfly on the tent before it rains.
rainfly 是名词，不能用作动词；正确表达需要使用动词短语如 'put up' 或 'attach'。
grammar · medium
易错句子I need to buy a new rainfly for my backpack.
正确表达I need to buy a new rain cover for my backpack.
rainfly 特指帐篷的外帐，背包的防雨罩应称为 rain cover。
两者均指帐篷的外层防雨布，但'rainfly'更侧重用于遮雨的功能，而'flysheet'是英式用语，更泛指导向帐篷的覆盖层。
'tarp'泛指防水布，可用于多种场合，而'rainfly'特指帐篷的可卷起前帘。
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