To make something simple requires a lot of effort and skill.
让一件事变得简单需要许多的努力和技巧。
A lot of time and effort was required to make all the arrangements.
做好所有这些安排要花许多时间和精力。
I need a lot of effort and learning to make progress.
我需要通过很多的努力和学习来取得进步。
You've spent a lot of time and effort to make a buck pretax.
你已经花了很多时间和精力来赚税前的收入。
You've spent a lot of time and effort to make a buck pretax.
你已经花了很多时间和精力来赚税前的收入。
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