Make sure you use an empty box (no stuffing, yet) and really really make sure the box is totally sealed and the gasket is sealing well.

确定您使用一个空的箱子（没有充塞）并且真正地真正地确定箱子完全被密封并且垫圈密封得很好。

youdao

Your kit should be waterproof as well, particularly if you will travel with it away from home; however, sealing your supplies inside of zipper baggies is usually all you need to do the job.

你的急救工具箱还必须是防水的，尤其是当你带着它出门远行的时候；不过，你通常需要密封拉链袋里面的用品。

youdao

In very long period of time, I can not sleep well. The darkness resembled the gradually concretionary plaster envelop, sealing me inside.

很长的日子里，我无法入睡，黑暗像渐渐凝固的石膏，把我封印在里面。

youdao

President Barack Obama, who has been under pressure to show a strong response to the spill, said he was committed to standing by communities along the Gulf Coast well beyond the final sealing of the well.

CNN: STORY HIGHLIGHTS

The government made a huge mistake when in the first few days of the catastrophe it did not form a partnership with BP, work out and assign responsibilities, and then get on with sealing the well, protecting the wetlands and cleaning up the oil together.

ECONOMIST: Letters

Then there is Halliburton, which was contracted to cement the production liner in the well casing, effectively sealing off the reservoir from the well bore.

FORBES