動詞 seal:

1. close with or as if with a seal
   同義詞：seal
2. make tight; secure against leakage
   同義詞：seal, seal off
3. decide irrevocably
   同義詞：seal
4. affix a seal to
   同義詞：seal
5. cover with varnish
   同義詞：varnish, seal
6. hunt seals
   同義詞：seal

形容詞 sealed:

1. established irrevocably
   同義詞：certain
2. closed or secured with or as if with a seal
3. undisclosed for the time being
4. determined irrevocably
5. having been paved
6. covered with a waterproof coating
7. (of walls) covered with a coat of plaster
   同義詞：plastered

1. Police sealed off all the exits from the building.
   警方把建筑物的所有出口都封鎖住了。
2. The jar must be well sealed.
   這個罐子得封嚴實了。
3. I'd like to tell you what I know but my lips are sealed.
   我何嘗不想把我知道的都告訴你，只是有口難言。
4. Sealed containers of nuclear waste have been dumped in the sea.
   盛有核廢料的密封容器被丟在海里。
5. The envelope was firmly sealed.
   這個信封封得很嚴實。
6. The computer disk is sent in a sealed container.
   計算機軟盤裝在密封的盒里寄出。
7. A sealed plastic or foil container used in packaging frozen or dehydrated food.
   塑膠封袋用來裝冰凍或蒸干食物的密封的塑料或箔制容器
8. The radioactive waste should be buried deeply under the ground in sealed box.
   這些放射性廢物應該放在密封的箱子里深埋在地下。