“teenager”的读音如下：

英式发音：[ˈtiːneɪdʒə（r）]

美式发音：[ˈtiːneɪdʒər]

其中，“teen”的发音类似于“teen”，“-ager”的发音类似于“-ajər”。在英式发音中，“r”通常会被发出，而在美式发音中则可能不会发出。

“teenager”的意思是 十几岁的青少年，通常指十三岁到十九岁之间的少年。

例如：

1. He was acting like a lovelorn teenager.

2. As a teenager, I was self-harming regularly.

3. The target audience for this advertisement was mainly teenagers.

4. A teenager is someone who is between thirteen and nineteen years old.

希望这些信息对你有所帮助!