He adds that the country is willing to work with the international community to control new psychotropic substances.

他补充说，中国愿意与国际社会合作，共同管控这类新型精神类药物。

He says at least ten percent of marijuana users could become dependent on the drug. Most marijuana supporters agree that pot is a psychotropic substance.

他说至少百分之十的大麻使用者可能会对这种药物产生依赖。大多数大麻支持者都认为大麻是一种精神药物。