sealed

• 指某物被封闭或固定得很牢固，通常是为了防止进入、泄漏或未经授权的接触；也可指文件、容器等被正式封缄。

Describes something that is closed or fastened securely, often to prevent entry, leakage, or tampering.

1. Closed tightlyB1formal

   Closed or fastened securely so that air, liquid, or other substances cannot enter or escape.

   密封的

   • The jar was sealed to keep the food fresh.
   • Make sure the envelope is sealed before mailing it.
   • The container is sealed with a plastic lid.

   同义词airtighthermeticimpermeabletightwatertight

   反义词openunfastenedunsealed

2. Officially closed or confirmedB2formal

   Made final or official, often by a legal or authoritative action.

   正式确认的

   • The deal is sealed after both parties signed the contract.
   • The court issued a sealed order regarding the case.
   • The agreement was sealed with a handshake.

   同义词approvedcertifiedclinchedconcludedconfirmedconsummatedratifiedsettled

   反义词invalidopenunconfirmedvoid

3. Prevented from being openedB1formal

   Made inaccessible or impossible to open without breaking a seal.

   密封的

   • The evidence box was sealed by the police.
   • The medicine bottle is sealed for safety.
   • The door was sealed shut after the fire.

   同义词closedfastenedshut

   反义词openunlockedunsealed

• 动词，表示密封、封闭某物使其不漏或不被打开，也指加盖印章或正式批准使其具有约束力或最终确定。

A verb used to indicate the act of closing or fastening something securely, or making something official or final.

1. Close securelyB1formal

   To close or fasten something tightly so that air, water, or other substances cannot pass through.

   密封

   • She sealed the envelope before mailing it.
   • The plumber sealed the pipe to prevent leaks.
   • Make sure to seal the container tightly after use.

   同义词caulkclosecorkfastenplugsecureshutstop

   反义词open

2. Make final or officialB2formal

   To confirm or finalize an agreement, decision, or deal.

   敲定

   • They sealed the contract with a handshake.
   • The victory sealed their place in the finals.
   • The treaty was sealed by the signatures of both leaders.

   同义词cementclinchclosecompleteconcludeconfirmratifysettlevalidate

   反义词breakcancelinvalidaterescindvoid

3. Prevent escape or entryB2formal

   To block or close off an area to prevent people or things from entering or leaving.

   封锁

   • The police sealed off the crime scene.
   • The border was sealed during the crisis.
   • They sealed the room to contain the gas leak.

   同义词barblockcloselockobstructseal offsecureshutstop

   反义词openunseal

短语动词变体seal inseal off