P : The forehead. Sometimes I also have a toothache.是什么意思？

P : The forehead. Sometimes I also have a toothache.

前额部. 有时牙齿也疼.

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

forehead

n. 额，前部；

例句
She tapped her forehead and looked annoyed with herself...
她拍打着脑门，看上去在生自己的气。

sometimes

adv. 有时，间或，时

例句
I want to work at home on a Tuesday but as it turns out sometimes it's a Wednesday or a Thursday.
我想周二在家工作，但实际上有时却是周三或是周四。

also

adv. 也，同样，并且；conj. 另外；

例句
The media have also abetted the feeling of unreality.
媒体也在一旁对这种非现实感推波助澜。

have

aux. 用以构成完成式及完成式的不定式，表示已经…；vt. 有，具有，拿，取得，从事，必须，不得不；n. 〈口〉有产者，有钱人，富国，〈英俚〉欺骗，诈骗；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

toothache

n. 牙痛，牙

例句
Love and toothache have many cures, but none infallible, except possession and dispossession.
爱情和牙痛有多种疗法, 但无一可靠, 除非要么留着,要么拔去.