题目给出了积分的条件，就必须要弄清楚，什么是积分的函数，什么是积分区域。

When you are given a piece of data in the statement of a problem, you have to figure out whether that is part of a function to be integrated or whether that is part of the region of integration.

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要学习本教程给出的材料就必须满足以下假设或先决条件

The material presented in this tutorial is predicated on the following assumptions or prerequisites

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因此，相同的目标的三条踪迹(即给出三个位置)是能够上报给MPC并发布在申请确认页面(CP)的必须条件——达到我们目的的第一步。

Thus, three trails (giving three positions) of the same object are needed for the MPC to post an FMO on the Confirmation Page (CP), the first step on the path to our goal of an MPC designation.

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