to close an envelope by sticking its edges together
Please seal the envelope after putting the letter inside.
請把信放進去後封好信封。
to close a container tightly so nothing can get in or out
Make sure to seal the jar to keep the food fresh.
確保密封罐子以保持食物新鮮。
to make something final and cannot be changed
They signed the contract to seal the agreement.
他們簽署合約以最終確定協議。
to cover a surface with a protective layer
We need to seal the wood to protect it from water.
我們需要給木材做密封處理以防潮。
to block a place so no one can pass
Police sealed the area after the accident.
事故發生後警方封鎖了該區域。
an official mark on a document to show it is real
The document has the king's seal on it.
文件上有國王的印章。
something that makes an agreement final
The handshake was the seal of their promise.
握手是他們承諾的最終確認。
a material that closes a container tightly
Check the seal on the bottle before drinking.
飲用前請檢查瓶子的密封情況。
a wax or paper mark that must be broken to open something
He broke the seal to open the ancient letter.
他拆開封蠟打開了那封古老的信。
a tool used to make an official mark
The king used his seal to mark important papers.
國王用他的印章標記重要文件。
a sea animal that lives on coasts and eats fish
We saw a seal swimming near the beach.
我們看到一隻海豹在海灘附近游泳。