How do you prevent commingling of certified with non certified products during transport and storage?是什么意思？

How do you prevent commingling of certified with non certified products during transport and storage?

在运输和储藏期间如何防止认证与非认证的产品混淆?

how

adv. 怎样，健康状况如何，到何种地步，以任何方式；n. 方法，方式；

例句
He showed how the rich and powerful can abuse their position.
他让我们看到有钱有势的人是如何滥用其地位的。

do

aux. 构成疑问句和否定句，代替动词，用于加强语气；vt. 做，干，进行，从事；vi. 表现，进展，引起，行过；n. 社交聚会，社交活动，宴会；

例句
Rachel was going to do something about Jacob...
蕾切尔将对雅各布有所行动。

you

pron. 你，你们，您们，各位，大家；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

prevent

vt. 预防，阻碍，阻止，[宗教]引领；vi. 阻挠，阻止；

例句
...an abortive attempt to prevent the current President from taking office.
企图阻止现任总统连任的失败尝试

commingling

v. <文>混合，掺和，合并( commingle的现在分词 )；

例句
How do you prevent commingling of certified with non certified products after harvest?
如何避免收获后认证与非认证产品的混淆?

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

certified

adj. 被鉴定的，被证明的，有保证的，公认的；v. （尤指书面）证明( certify的过去式 )，发证书给…，证明（某人）患有精神病，颁发（或授予）专业合格证书；

例句
...if the president certified that the project would receive at least $650m from overseas sources...
如果总统证明这个工程将获得至少6.5亿美元的海外资金

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

Non

adv. 非，不；n. [法]反对票，投反对票的人；

例句
Above its doors was a Latin inscription: Non omnia possumus omnes...
门的上方刻有拉丁文铭“人非万能”。

products

n. 乘积( product的名词复数 )，（自然、化学或工业过程的）产物，产量，制品；

例句
The illegal trade in animal products continues to flourish...
野生动物制品的非法交易仍旧猖獗。

during

prep. 在…的时候，在…期间，当…之时，其间；

例句
...the accrual of funds used during construction.
建设过程中资金的累积

transport

vt. 运送，运输，流放，使欣喜若狂；n. 运输，运输船（机），运输系统，狂喜，流放犯；

例句
Foreign Office officials assisted with transport and finance problems...
外交部官员帮助解决运输和经费问题。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

storage

n. 贮存，贮藏，储藏处，仓库，贮存器，蓄电（瓶）；

例句
...big steel storage bins.
钢质大储藏箱