Finally, DNA ligase newly synthesized DNA chain and the original links.最后DNA连接酶将新合成的DNA链与原来的链接上.Methods: The restriction endonuclease and T 4 DNA ligase were used to construct the vector plasmid.方法载体的构建采用限制性内切酶酶切、4DNA连接酶...
她的嗓音非常好，现在的唱功比以往任何时候都要好。She's got a great voice and is singing better than ever.现在的失业人数已接近300万。Unemployment is now a whisker away from three million.现在的生活水平几乎快要无法维持生计。The standard of living today is on the edge of s...
Tap water is drinkable everywhere in the Algarve.阿尔加维各地的自来水都可饮用。The Algarve is a golfer's paradise.阿尔加维是高尔夫球手的天堂。...the Algarve, Portugal's southernmost province.阿尔加维， 葡萄牙最南部的省份Alte, in the hills northwest of L...
我不知道被邀请者的确切人数,但不用思索,我认为会有40人左右.I don't know the exact number of people who have been invited but off the top of my head I should think there will be about forty.谢谢 您. 谁是您的担保人,或邀请者?A: Thank you. Who is your sponsor o...
装有发条的老式留声机an old-fashioned wind-up gramophone在留声机上放张唱片,我们来听点音乐 吧.Put a record on the phonograph and let's have some music.电话和留声机是同一时代的产物.The telephone and the gramophone were contemporary....
All shades of mauve, lilac, lavender and purple were fashionable.深深浅浅的各种木槿色、丁香色、熏衣草色和紫色都是流行色。Wallpapers for children too often come only in sickly pastel shades.给孩子们用的墙纸往往颜色苍白暗淡。Choose shades which tone in with your natu...