医生建议他记录头痛发生的频率,以便进一步诊断。Yīshēng jiànyì tā jìlù tóutòng fāshēng de pínlǜ, yǐbiàn jìnyíbù zhěnduàn.The doctor advised him to record how frequently the headaches occur for further diagnosis.
这种鸟叫的频率很高,一分钟能叫十几次。Zhè zhǒng niǎo jiào de pínlǜ hěn gāo, yì fēnzhōng néng jiào shí jǐ cì.This kind of bird chirps very frequently, over ten times a minute.
为了身体健康,你应该提高运动的频率。Wèile shēntǐ jiànkāng, nǐ yīnggāi tígāo yùndòng de pínlǜ.For your health, you should exercise more often.