Always use a plastic lid, not fully covered, to keep the water in the food.

为了保持食物中的水分，记得要用一个塑料盖子，但不要全部盖上。

youdao

The test results in different places and in many years showed that there was a striking increase, covered by water permeability plastic film in maize yields than conventional film and than no cover.

多年多点试验示范表明：渗水地膜覆盖玉米增产效果显著，主要表现为单株生产力的提高，在年均积温较小的地区增产幅度大。

youdao

The results showed that the content of free water with plastic film envelopment was significantly higher than that covered with soil or open fields treatment.

结果表明，包膜枝条自由水含量显著高于埋土越冬及露地越冬处理。

youdao

In one disused garage, littering the floor, we found foil-covered plastic water bottles, used for smoking crack cocaine, and tell-tale slivers of silver foil used for smoking heroin.

BBC: Campaign to tackle ethnic drug abuse

The tents they live in are small, covered by tarps and plastic sheeting to keep water out.

CNN: Tent city becomes home in tough times