n. (botany) a plant lasting for three seasons or more
a. lasting three seasons or more
s. lasting an indefinitely long time; suggesting self-renewal
s. recurring again and again
词态变化
复数形式:perennials
常见例句
1
annual or perennial herbs n
2
n gentian of eastern North America having clusters of bristly blue flowers n perennial herb of southeastern United States having white-rayed flower heads
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n tansy-scented Eurasian perennial herb with buttonlike yellow flowers
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perennial or annual aquatic or marsh plants
5
n perennial or biennial herb cultivated for its delicate usually blue flowers
