我记得我们小时候都没人去矫正牙齿的。不过现在越来越多的人知道了矫正牙齿的好处了。我朋友都三十岁了,也开始做了。
wǒ jìde wǒmen xiǎo shíhou dōu méi rén qù jiǎozhèng yáchǐ de 。bùguò xiànzài yuèláiyuèduō de rén zhīdao le jiǎozhèng yáchǐ de hǎochu le 。wǒ péngyou dōu sānshí suì le ,yě kāishǐ zuò le 。
I remember that when we were little, nobody straightened their teeth. However, nowadays more and more people know that having straight teeth is a good thing. My friend is already 30 years old and she started doing it.