Someseaurchins海胆havevenomous(toxin)spines
A、sensuous(feeling)Bats fly, rather than glide, and thus are the only mammals capable of true flight.
Some children display an unquenchable 难以抑制的 curiosity about every new thing they encounter.
The first paper was made from the bark of the mulberry tree.
Some animals pant and sweat to speed evaporation of body moisture and thus cool themselves.
WhileBillieHolidaydidnotinventthemusiccalled"theblues",shemostassuredlyhelpedpopularizeit.
