bluestems 释义与例句 n. 1. plural of bluestem 相关短语 big bluestems little bluestems bushy bluestems cane bluestems sand bluestems tall bluestems little bluestem 【植物】北美小须芒草[产于北美中部的一种饲料用禾草(Andropogon scoparius)] big bluestem bushy bluestem cane bluestem tall bluestem sand bluestem