learnt about的用法和樣例：
例句
- Childrenseem to learn about computers by osmosis.
兒童似乎不知不覺地就了解了計算機。 - His mother learnt about her son's success in the newspapers.
他的母親是從報紙上知道她兒子成功的消息的。 - It was from the study of these that so much was learnt about the interior of the earth.
通過對這些的研究，我們了解了大量有關地球的內部情況。
