sealant
/ˈsiːlənt/
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A sealant is a substance that is used to seal holes, cracks, or gaps. 密封胶
noun [物质名词] [机] 密封剂
Apply a coat of sealant if you need to. 需要的话，抹一层密封剂。
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- Sealant such series of the water used for air curing. 此类密封胶系列用空气中的水分进行硫化。
- Check with your school about whether it has a sealant program. 核实你的学校是否有提供保护胶的计划。