it‘s nice with small flaws
Overall it's nice. But on my iPad, the word teaching video can’t be open properly . I can hear the voice, but the area is just black and every time when they are showing the video was on, my whole screen went black, and I need to tap it over and over. I don’t know if I am the only one who has this issue or what. Can someone help me?
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概念不错
很好得利用了中国汉字象形得概念。
