House prices keep rising and falling but they should eventually even out.

房价一直时涨时落，但最终应该会趋于稳定。

《牛津词典》

Remember that intonation is the rising and falling of the pitch of your voice.

语音语调也是英文口语练习中的重点。

youdao

Remember that intonation is the rising and falling of the pitch of your voice.

语音语调也是英文口语练习中的重点。

youdao