Some sea urchins海胆 have venomous (toxin) spines
A、sensuous(feeling)C
暂无解析
Formulated in 1823, the Monroe Doctrine asserted that the Americas were no longer open to European colonization.
Insectpestsareamongtheleadingcausesofcropfailure.
Foodmustbemoistinordertohaveataste.
In1974HenryAaronbrokeBabeRuth'smonumentallifetimerecordof714homeruns.
Themegaphone(microphone)makesthevoicesoundlouderbecauseitpointssoundwavesinonedirectionandkeepsthemfromspreadingoutinalldirections.
