你不得不去实行这第一个步骤，然后朝向化学或者物理。

You have to perfect the first step and then move on to chemistry or physics.

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然后，把每个方案按照从“必须”到“最好能实行”的顺序排列下来。

Then, rank every program on your list from the must-haves to the nice-to-haves.

youdao

然后，把每个方案按照从“必须”到“最好能实行”的顺序排列下来。

Then, rank every program on your list from the must-haves to the nice-to-haves.

youdao