They were flapping their bat - like fins before dropping back into the water with a terrific splash.它们拍打着蝙蝠般的鳍,然后随着令人恐惧的溅水声掉进了水中.The fins of a fish act as hydrofoils.鱼的鳍就像水翼船艇的水翼.Discarded fishing lines or nets entrap se...
Iron, nickel, copper, silver, gold, iridium , or ruthenium may be included as cocatalyst metals.铁 、 镍 、 铜, 银 、 金, 铱或钌,可用作复合催化剂金属.Using the same approach, iridium is alloyed with rhodium.使用同样方法, 铱被熔合与铑.Before the collisio...
木板人行道上的积雪被来往的行人踩成了灰褐色.The board sidewalks were gray with trampled snow.番茄踩成一滩一滩的红浆.The tomatoes crushed into pools of red juice got on her nerves particularly.他用脚把粉笔踩成粉.He crushed the chalk to powder under his feet....