维生素B可以促进红细胞再生。Vitamin B assists in red-blood-cell regeneration.细菌一进入血液里，就附着在红细胞表面上。Once in the bloodstream, the bacteria adhere to the surface of the red cells.红细胞大致呈圆盘状。Red blood cells are roughly the shape of a disk....
The news gave him uneasiness.那消息令他不安。I felt a great uneasiness about meeting her again.想到要再次见到她，我感到极不自在。Whispers passed along , and a boding uneasiness took possession of every countenance.到处窃窃私语,人人脸上露出不祥的焦虑.He felt a sp...
Whales, seals, penguins, and turtles have flippers.鲸 、 海豹, 企鹅和海龟均有鳍形肢.The penguins'burrows are commonly found under the boardwalks.在木板走道下可以发现许多企鹅的洞穴.Seals, turtles and penguins have flippers.海豹 、 海龟、企鹅均有鳍状肢.Millions...