求翻译：4. 蚕丝被最好套上被套，内胎不可水洗和干洗；切勿在烈日下曝晒；避免在被上重压，以保持松软；储存时，不能放入防虫剂等化学药剂。是什么意思？

4 is the best put on silk quilt, inner tubes can not be washed and dry cleaning; not in the hot sun exposure; to avoid being on the pressure, in order to maintain soft; store, you can not put chemical pest control agents.

silk quilt . 4 was set at best set, tread water rinse and dry cleaning; not to be exposed to hot sun, and to avoid being on the stressor, in order to maintain soft; storage, cannot be placed in the pest control agents, and other chemicals.

4. The silk best is put on the bedding bag, the tire tube may not the laundering and dry cleans; Being sure not the insolation exposes to the sun under the hot sun; Avoids in by on heavy pressure, maintains softly; When storage, cannot put in chemical agents and so on the bug repellant.

4. silk being the best quilt cover, inner tubes do not wash and dry cleaning; not in the hot sun insolation; avoid pressure on the was to keep the soft; is saved does not fit into repellent chemicals.

4. silk being the best quilt cover, inner tubes do not wash and dry cleaning; not in the hot sun insolation; avoid pressure on the was to keep the soft; is saved does not fit into repellent chemicals.