As digital learning uses computers or smartphones, watching the screen too long may be bad for your eyes.
由于数字学习使用电脑或智能手机，长时间盯着屏幕可能对你的眼睛有害。
If conventional wisdom says that watching TV is bad for your eyes, watching 3D TV may be three times worse.
如果在传统观念中，看电视伤眼睛，那么看3D 电视对眼睛的损害可能是普通电视的3倍。
If conventional wisdom says that watching TV is bad for your eyes, watching 3D TV may be three times worse.
如果在传统观念中，看电视伤眼睛，那么看3D 电视对眼睛的损害可能是普通电视的3倍。
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