单词：narwhals
(narwhal 的复数) n. 独角鲸（等于narwal）；一角鲸（一种齿鲸, 雄性有一长牙）
plural of narwhal
n. small Arctic whale the male having a long spiral ivory tusk
n. small Arctic whale the male having a long spiral ivory tusk
单词：narwhals 相关文章
Narwhals arent fish, theyre mammals--a rare type of whale. They have a famous spiraled tusk. The tusk, which is commonly misconceived for a horn, is actually an elongated tooth. Only male narwhals grow tusks, which can be over six to almost ten feet
发表于:2019-01-22 / 阅读(71) / 评论(0)
英语时差8，16
英语时差8，16
By Paul Sisco Washington, DC 01 February 2008 Scientists know that the waters north of Greenland, around the Arctic Circle, significantly influence global weather patterns. But until recently, they only have been able to measure the region's deep oce
发表于:2019-01-31 / 阅读(115) / 评论(0)
VOA常速英语2008年（二月）
VOA常速英语2008年（二月）
Males may use their tusks in fights with other males to establish social hierarchies. Tusks could also be used for breaking through thin layers of ice in their freezed ocean habitate. Researchers from Harvard School of Dental Medicine think the giant
发表于:2019-02-15 / 阅读(70) / 评论(0)
英语时差8，16
英语时差8，16