My husband had a very low sperm count.我丈夫的精子数很低。From the body, the sperm whale is smaller than the killer whale.从体形上看, 抹香鲸比虎鲸要小.The sperm whale has about thirty teeth in its lower jaw.在抹香鲸的下颚上大约有30颗牙齿.Only one sperm fert...
his dual role as composer and conductor他兼任作曲家和指挥的双重角色He has dual role as composer and conductor.他兼作曲家及指挥的双重身分.The airplane had dual controls.这架飞机有两套操纵装置....
The active ingredient in some of the mouthwashes was simply detergent.某些漱口剂中的有效成分只不过是洗涤剂而已。Speed is the essential ingredient of all athletics.速度是所有田径运动项目的关键要素。Coconut is a basic ingredient for many curries.椰子是多种咖喱菜的基本成分。...