长达25英里的交通拥堵阻塞了M6号高速公路的北行车道。A 25 mile traffic jam clogged the northbound carriageway of the M6.唯一的问题就是大量水草阻塞了水道。Large, clogging banks of weed are the only problem.在威尔士的中部地区，6英寸厚的大雪阻塞了道路。In Mid-Wales six inches of snow blo...
China was the first country in the world to synthesize crystalline insulin, a bioactive protein.中国在世界上最早用人工方法合成一种有生物活力的蛋白质--结晶胰岛素.There are many amino acids that the body cannot synthesize itself.有许多种氨基酸人体自身不能合成。Etioplas...
他已经张贴了一张“禁止钓鱼”的告示牌。He has posted a sign up that says "No Fishing"她那钓鱼的故事令我心烦意乱.She got on my nerves with her fishing stories.钓鱼的关键就是要有耐心.In fishing , patience is the name of the game....