其次，大学生应该花心思在自己专业课程，而不是在大学英语考试上拿到更高分，况且准备大学英语考试需要花费很大精力。

Moreover, students should spend more time in their major courses, rather than in getting higher scores in CET. Preparing for CET is a huge job that costs a lot of time.

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人类花费了很大的时间和精力培育出了不同种类的狗狗。

Humans have spent a lot of time and effort breeding different kinds of dogs.

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看第一眼，听起来像花费了很大精力。

At first glance, this may sound like a lot of effort.

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