若是你白天感到疲惫,那就意味着你需要更多的睡眠.
If you feel in the daytime,it you need to get more sleep.
许多发明对我们的生活产生了很大的影响.(make a difference)
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同学们都在盼着过一个愉快的假期.(look forward to)
她经常帮父母做家务.(help with)
It's very important for us to learn Chinese well.
He is always ready to help people in need.