Visit your dentist twice a year for a check-up.是什么意思？

Visit your dentist twice a year for a check-up.

每年去牙医处做两次牙齿检查。

visit

vt.& vi. 访问，探望，参观，游览；vi. 作客；n. 访问，参观，逗留；vt. 拜访，参观；

例句
Michael said that his planned 10-day visit would be a purely private affair...
迈克尔说他所计划的10天访问纯属个人私事。

your

pron. 你的，你们的，尊，玉，乃；

例句
I think there's something a little peculiar about the results of your test.
我认为你的化验结果有点不对劲。

dentist

n. 牙科医生；

例句
The dentist left his wife of 15 years and openly cohabited with his receptionist...
那个牙医离开了和他生活了15年的妻子，与自己诊所的接待小姐公开同居。

twice

adv. 两次，两倍，两遍；

例句
Although he was twice as old as us, he became the life and soul of the company.
虽然他的年纪是我们的两倍，但他却成为了公司的灵魂人物。

year

n. 年，年纪，一年的期间，某年级的学生；

例句
The following year Parliament voted to abolish the death penalty for murder...
议会于翌年表决对谋杀罪废除死刑。

for

prep. 为，为了，倾向于，关于，当作；conj. 因为，由于；

例句
I've come looking for a bit of advice.
我特来讨教。