1
the sealing of [sth]
The sealing of the pipeline required special materials.
管道的封闭处理需要特殊材料。
密封；封口
先理解核心含义，再看它在真实句子里的用法。
密封；封口
the action of sealing something; closing or fastening it securely
The sealing of the pipeline required special materials.
管道的封闭处理需要特殊材料。
动词 seal 的任何含义的动作；封缄、密封等。
Action of the verb to seal in any sense.
捕猎海豹。
Hunting of seals (the animals).
The sealing of the pipeline was completed ahead of schedule.
管道的封闭处理提前完成了。
Proper sealing is essential to prevent moisture from entering the container.
适当的封闭处理对于防止湿气进入容器至关重要。
They checked the sealing of the windows before the storm arrived.
他们在暴风雨来临前检查了窗户的封闭处理。
The sealing of the pipeline required special materials.
管道的封闭处理需要特殊材料。
动词常用 do、perform、carry out。
Workers performed sealing on all joints.
工人们对所有接头进行了封闭处理。
Sealing technology has improved significantly.
封闭技术有了显著改进。
Not this
He applied a sealing to the window.
Use this
He applied sealing to the window.
“sealing”作名词表示封闭处理时，是不可数名词，前面不能加不定冠词“a”。
Not this
The sealing the container is complete.
Use this
The sealing of the container is complete.
名词“sealing”后接宾语时，需要加介词“of”表示所属关系，不能直接跟名词。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
封蜡
She pressed her signet ring into the hot sealing wax.
她把图章戒指按进滚烫的封蜡里。
热封
Heat sealing is widely used in food packaging.
热封广泛用于食品包装。
密封胶
Use a sealing compound to fill the gap around the window frame.
用密封胶填充窗框周围的缝隙。
密封环
The leak was caused by a broken sealing ring.
泄漏是由一个破裂的密封环引起的。
敲定交易
Sealing the deal took several rounds of negotiation.
敲定这笔交易经过了好几轮谈判。
猎海豹季节
Many local families relied on the sealing season for income.
许多当地家庭依靠猎海豹季节获得收入。
敲定交易；达成协议
After months of negotiation, they are finally sealing the deal.
经过数月的谈判，他们终于敲定了这笔交易。
决定某人的命运；使结局无法改变
By refusing to apologize, he was sealing his fate.
他拒绝道歉，这无异于注定了自己的结局。
Use sealing naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
sealing 是 seal（海豹/封蜡）加 -ing：想象用蜡封信口，或捕海豹的动作。
语域：neutral 常见场景：日常封口、建筑密封、海豹捕猎 sealing 作名词时通常指动词 seal 的动作，如封口或密封，多用于包装、建筑等场合；在特定语境中也可指捕猎海豹，但这层意思比较少见，需结合上下文判断。
常作不可数名词，表示‘封闭’的动作或过程；也可作可数名词，指具体的密封或封闭处理。
Dictionary facts from ECDICT, WIKTIONARY.