[ yuántóu ] archicephalon primary head procephalon protocephalon
Example Sentences:
1.
If the shenzhen and hong kong governments are concerned about the problems with pollution entering in the shenzhen river , then the problem should be tackled at source , by controlling the discharge of domestic and agricultural waste 若深圳与香港特区政府关注深圳河的污染问题，实在理应从污染原头著手，透过控制家庭及农业污水的排放，彻底解决问题。
