短语讲解：
1. Government statistics show one third of all children between 7 and 12 in China suffer from poor eyesight.
suffer from患(某种病); 受(某种病痛)折磨; 因(疾病)而痛或不舒服
例句：You must have suffered from a cold.
你一定是感冒了。
2. Kids have to compete academically from a really young age, which leads to an increased pressure to study.
lead to导致
例句：Smoking can lead to lung cancer.
抽烟可能导致肺癌。
3. They also play outside less often because of an addiction to computer games and electronic devices.
because of因为, 由于
例句：I came back because of the rain.
因为下雨, 所以我回来了。
4. The mobile eye clinic helps tackle this problem as it makes it easy to check the eyesight of a large number of students.
a large number of很多
例句：A large number of people were present.
很多人出席了。
