有时候，业务流程需要人的介入。

Occasionally, people need to intervene in a business process.

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这种流程需要很多工作，但是绝对有效。

This process takes a lot of work, but it definitely works.

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该流程需要严格地遵守。

This process needs to be closely followed.

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And what that means it's there's all sorts of precautions and procedures you take that are special when you deal with these.

这意味着当你与它们打交道的时候,你需要做各种各样特别的防范措施与流程。

麻省理工公开课 - 化学原理课程节选