Yahoo奇摩字典 網頁搜尋

搜尋結果

1. Oxford Dictionary

   water boatman

   • n.
     a predatory aquatic bug that swims on its back using its long back legs as oars. It is able to capture large prey such as tadpoles and fish.；an aquatic bug which spends much of its time on the bottom, using its front legs to sieve food from the water and its hair-fringed rear legs for swimming.

   • noun: water boatman, plural noun: water boatmen