riverhead的用法和樣例：
例句
用作名詞 (n.)
- Riverhead areas have an especial status and Very important function in ecological, economical and social development in China.
江河源區在我國經(jīng)濟社會(huì )發(fā)展和生態(tài)環(huán)境保護與建設中具有十分重要的地位和作用。 - Chaihe is an important riverhead source in Tieling, so its eutrophic cannot be ignored.
柴河水庫作為鐵嶺市重要的飲用水源，其富營(yíng)養化問(wèn)題不容忽視。
