口腕[kǒu wàn]
{动} oral arms
1. oral arm：oral appendage 口肢 | oral arm 口腕 | oral cavity 口腔
1. 这种无脊椎动物身后拖着长长的布满刺细胞的触角和多褶的口腕，可捕猎水中的浮游生物和小鱼。
The invertebrate hunts by trailing its long sting-cell-covered tentacles and ruffled mouth-arms through the water, combing for zooplankton and larval fishes.