在 起到了重大作用
It played a significant role
以上为机器翻译结果，长、整句建议使用 人工翻译 。
它便宜，易于服用，副作用少，在消灭南欧和美国南部的疟疾中起到了重大作用。
Cheap, easy to administer, and with few side effects, it played an important role in eradicating the disease in southern Europe and the southern United States.
youdao
应用推荐
模块上移
模块下移
不移动