看詞典：
麥克米蘭英語詞典 - American
eyesight
eye·sight / `a?,sa?t / noun [uncount]
the ability to see:
My eyesight is really bad.
Reading in poor light can damage your eyesight.
劍橋高級學習詞典
eyesight
eyesight /?a?.sa?t/
noun [U]
the ability to see:
good/bad/poor eyesight
You need to have your eyesight tested.
海詞在線詞典
eyesight ['aisait;'ai?sait]
n. 視力
例句:
His eyesight is failing.
他的視力漸漸衰退了。
His bad eyesight exempted him from military service.
他因視力不好而免服兵役。
His eyesight is becoming progressively worse.
他的視力越來越差。
妳看，有了字典，世界還是很美好的……