每六个月或根据需要清洗过滤器一次。
Clean the strainer every six months or as conditions require.
期限届满以后,应当办理注销登记或根据需要申请设立分公司。
Upon expiration of their terms, they shall either carry out de-registration procedures or, as required, apply for establishment as a branch.
这使您可以根据需要折叠或展开元素。
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