In the former, levels of tetrahydrocannabinol (THC), the chemical behind the psychological effects of cannabis, are above 25%.

前者的四氢（THC）含量在25%以上，这种化学成分赋予了心效应。

Earlier research at King's College London had shown that CBD seemed to block the effects of tetrahydrocannabinol, the intoxicating substance in cannabis.

伦敦国王学院的早期研究，二酚似乎可以阻止四氢酚的影响，四氢酚是植株中的精神活性成分。