A computer programmer has to study math really hard.
电脑程序必须在数学上下功夫。
In the afternoon we have two math lessons and one music lesson. Math is difficultbut I study hard. And we sing a beautiful song.
在下午我们有两个数学课程和一个音乐的教训。数学是困难的但我努力学习。我们唱一首优美的歌曲。
Math is difficult but I study hard.
数学是很难的，可是我努力学习。
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