水的纯度定期检测。The purity of the water is tested regularly.要求学生们检验铜的纯度.The students are asked to prove the purity of copper.我们可以保证它的纯度.We can guarantee it pure....
Buy a dimmer switch and keep the light on low, or switch it off altogether...买一个调光开关，把灯光调暗，或者干脆把灯关掉。On the other hand , cyclobutane pyrimidine dimmer ( CPD ) just has an effect of cell cycle arrest.而CPD光 产物 ( cyclobutane...
I'm looking for a pinstriped suit with a 34 waist.我在找一套腰围34细条纹的西装.In a pinstriped suit he instantly looked like a stuffed shirt.穿上一套细条纹西装后，他马上就显得一本正经起来。...a dark pinstriped business suit.黑色的细条纹正装His pinstriped All -...
我车子的左前轮撞在一大块松动的路缘石上，导致车胎爆裂、轮辋凹陷。A great chunk of loose kerbing smashed into my left-front wheel, bursting the tyre and denting the rim.他把轮胎安到轮辋上.He fitted the tire around the rim of the wheel.此外,我们还提供挂车及重型汽车轮胎和轮辋.We also...
The Superpowers turned to the harder task of cutting their nuclear arsenals.超级大国开始着手削减核武器库这项更为艰难的工作。Much of the film shows the painter simply going about his task.这部电影大部分都在描述那位画家如何完全沉溺于自己的工作。Yesterday's meeting was ...