4. 要经常用温水擦洗密封条,使密封条保持弹性,以延长其寿命.的翻译：4. regularly with warm water scrubbing seal, seals maintain flexibility to extend its life. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

4 often with warm water to scrub seal, seal to maintain the flexibility to extend its life.

4. regularly with warm water scrubbing seal, seals maintain flexibility to extend its life.

4. Must use the lukewarm water to scour the packing frequently, makes the packing to maintain the elasticity, lengthens its life.

4. It is necessary to always use warm water scrub sealing strips maintain flexibility, so that sealed section in order to extend its life expectancy.

4. regularly with warm water scrubbing seal, seals maintain flexibility to extend its life.