例句
Seal the jar tightly to keep the biscuits fresh.
把罐子密封好，让饼干保持新鲜。
Builders should seal gaps around windows to reduce heat loss and improve household energy efficiency.
建筑工人应封住窗户周围的缝隙，以减少热量流失，提高家庭能源利用效率。
常用搭配
- seal an envelope｜封好信封
- seal a gap｜封住缝隙
- an airtight seal｜气密封口
- break the seal｜拆开封口
词形与相关词
sealed (adj.) · sealer (n.) · unseal (v.)
用法提示
作动词强调封严；作名词也可指海豹，注意语境。