英语语法分析

Other herbs that don't work effectively as teas include echinacea, milk thistle, and saw palmetto.

其他没有像药茶那样有效的草药包括松果菊、奶蓟和锯齿棕。

Echinacea is a common choice for people looking to get over a common cold.

紫锥菊是人们治疗感冒的常用药草。

Another group received echinacea and were told they were receiving the herb.

另一组服用了紫锥菊，并被告知他们服用的是草药。