密封

yòng bái là mì fēng píng kǒu yǐ fáng zhǐ yào wù huī fā

用白蜡密封瓶口，以防止药物挥发。

Seal up the mouth of the bottle with white wax to keep the medicine from evaporation.

qǐng bǎ qì tǐ mì fēng zài píng zi li

请把气体密封在瓶子里。

Please seal up the gas hermetically within the bottle.

bǎ dàn gāo mì fēng zài hé zi li

把蛋糕密封在盒子里。

Seal the cake in a box.

tā men zhǐ zhǎo dào le yī píng mì fēng de guǒ zhī

他们只找到了一瓶密封的果汁。

They only found an airtight bottle of fruit juice.

qǐng bāng wǒ dǎ kāi zhè ge mì fēng de guàn tou

请帮我打开这个密封的罐头。

Please help me open the sealed tin.

wǒ xū yào yī fù mì fēng shǒu tào

我需要一副密封手套。

I need a pair of airtight gloves.