There is usually an outer tent of water-proof fabric and a lighter inner tent or tents with a built-in groundsheet.

通常会有一个防水面料的外围帐篷，里面有一个轻便的内置帐篷或是一个带有防潮布的帐篷。

This doesn't usually have a groundsheet, but you can buy one to fit, though it costs extra.

这通常没有地垫，但你可以买一个来装， 但要额外付费。

They both had bedrolls and sweaters, groundsheets and flashlights, large-size thermos bottles and plenty of their favorite food.

他们都有铺盖卷和毛衣、床单和手电筒、大号热水瓶和许多他们最喜欢的食物。

No sewn-in groundsheet, like all the fancy tents have today, just a piece of canvas on the ground and the flaps at the bottom you rolled up and tied with strings.

没有像现在所有的帐篷那样缝好的床单，当时只有地上的一块帆布和底部的褶叶，你可以卷起来用绳子绑起来。

To photograph the larger pieces of landscape needed more apparatus than could conveniently be carried in a canoe that was already occupied by a sleeping-bag and groundsheet, so Searle was to come back later and photograph the set-pieces at his leisure.

拍摄更大的风景需要更多的设备，而不是用已经被睡袋和地垫占据的独木舟方便地携带，所以塞尔稍后回来并在他空闲的时候拍摄这些场景。