Subject + 不停 + 地 + Verb
不停 (bùtíng) means "non-stop" or "continuously" and is used to describe an action that keeps happening without pause. It is placed before or after the verb to emphasize that the action does not cease. For example, 他不停地说 means "he keeps talking non-stop."
她紧张得不停地咬指甲。
Tā jǐnzhāng de bù tíng de yǎo zhǐjia.
She was so nervous that she kept biting her nails.
外面的雨不停地下,已经下了一整天了。
Wàimiàn de yǔ bù tíng de xià, yǐjīng xià le yī zhěng tiān le.
The rain outside keeps falling nonstop; it's been raining all day.
弟弟不停地问我问题,我都快受不了了。
Dìdi bù tíng de wèn wǒ wèntí, wǒ dōu kuài shòu bù liǎo le.
My younger brother keeps asking me questions nonstop; I can barely take it anymore.