如果使用得当,避孕套是很有效的避孕手段。Condoms are an effective method of birth control if used with care.有些人指控税务稽查员使用了流氓手段。Some people accuse the tax inspectors of bully-boy tactics.那些熟悉桑德斯的人都称他为手段高明的政治家。Those familiar with Sanders call h...
The gas had apparently leaked from a cylinder.气体似乎由一汽缸漏出。a propane gas cylinder丙烷气钢瓶The mixture is fed into the cylinder from the carburettor.混合体由汽化器注入汽缸....
All the representatives must report themselves on time.所有的代表都必须准时报到。They were sent out as our representatives.他们是作为我们的代表被派出去的。Our representatives are ready to help you at all times.我们的代表随时乐意帮助你。There will be an economic ...
组氨酸:是蛋白质中少有的一种碱性氨基酸.Histidine A basic amino acid formed only rarely in proteins.目的研究非小细胞肺癌(NSCLC) 中脆弱性组氨酸三联体(FHIT) 、 细胞周期素D1(cyclinD1) 、 细胞周期蛋白依赖激酶4(CDK4)的表达与NSCLC发生发展的关系.Objective To investigate the role of FHIT, cyclin...