监测

jiān cè to monitor

苹果

píng guǒ apple; CL:個|个[ge4],顆|颗[ke1]

证书

zhèng shū credentials; certificate

是否

shì fǒu whether (or not); if; is or isn't

正常

zhèng cháng regular; normal; ordinary

售后服务

shòu hòu fú wù after-sales service

评价

píng jià to evaluate; to assess

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