家里的每个人都有自己的工作，我的爸爸是个工程师，工作非常辛苦，但他很努力。
In my family, everyone has their own job. My dad is an engineer who work very hard. But he tries to do it best.
也许他们工作很努力——他们在这里似乎看上去不太用功，但他们很友好。
Perhaps they're working hard—they don't appear to be very studious here, but they are very friendly.
虽然西蒙学习成绩很好，但他仍然很努力。
Although Simon has done well in his studies, he still works really hard.
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