单词	frog's-bit
释义	frog's-bit /ˈfrôɡzˌbit / noun A floating freshwater plant with creeping stems that bear clusters of small rounded leaves. Two species in the family Hydrocharitaceae: Eurasian frog’s-bit (Hydrocharis morsus-ranae) and American frog’s-bit (Limnobium spongia). Damage by this species is usually conspicuous wherever frog's bit occurs.... The frog's-bit is monoecious and has broad leaves with a well-defined petiole.
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