Let's get down to basics and stop horsing around.别胡闹了,我们还是收收心想想要紧事吧。Get down to the post office pronto!马上去邮局!I'm going to get down to studying English this term.这学期我要认真学英语了....
It was a vegetarian and probably snacked on pine needles and ferns.它属于食草动物,可能主要吃松针和蕨类植物.The xylem of ferns and conifers contains only tracheids.蕨类植物和针叶树的木质部仅含有管胞.Blackboys sprouted out of the thick undergrowth of ferns a...