Packing components into a multipart document is like an email with attachments, it helps you fetch several components with one HTTP request (remember: HTTP requests are expensive).
把页面内容打包成复合文本就如同带有多附件的Email，它能够使你在一个HTTP请求中取得多个组件(切记：HTTP请求是很奢侈的)。
In professions and so on food, drink, drugs manufacture, requests the product which finished to some packing to carry on the water bath to be antiseptic.
在食品、饮料、制药等行业中，要求对一些包装完毕的产品进行水浴灭菌。
Note that special sizes, lengths or packing requirements are available on all requests.
请注意 ， 特殊尺寸，长度或包装要求 ， 可对所有的请求。
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