Lots of people, coaches included, know the principles.
许多人，包括教练，知道这样的原则。
Presuming you know the principles of affiliate marketing, you still will be confronted with a lot of questions.
即使你对会员行销的原则了如指掌，你仍然会碰到许多问题。
Presuming you know the principles of affiliate marketing, you still will be confronted with a lot of questions.
即使你对会员行销的原则了如指掌，你仍然会碰到许多问题。
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