1·Coffee and tea are mild stimulants.
咖啡和茶是轻度兴奋剂。
—— 《牛津词典》
2·They also have heart stimulants.
他们也有心脏兴奋剂。
3·Moreover, other compounds that block phosphodiesterase's activity are not stimulants.
此外，其他阻止磷酸二酯酶活性的化合物不是兴奋剂。
4·In West Africa, people have long chewed kola nuts as stimulants, because they contain caffeine that also occurs naturally in tea, coffee, and chocolate.
在西非，人们长期以来都咀嚼可乐果作为兴奋剂，因为它们含有在茶、咖啡和巧克力中天然存在的咖啡因。
5·Drug abuse Control Amendments are enacted to deal with problems caused by abuse of depressants, stimulants and hallucinogens.
制定《药物滥用控制修正案》以处理滥用镇静剂、兴奋剂和致幻剂所引起的问题。