n.双壳类，双阀...

When the Thompson quadruplets espied him one day bivalve and ran quickly away.有一天,汤普森家的四胞胎看见他,“双壳贝!”喊完后一溜烟的跑走了....

bivalve的音标：bivalve的英式发音音标为：['baɪvælv]bivalve的美式发音音标为：['baɪˌvælv]...