她像个男人似的握了手，坚实而又有力。She shook hands in a mannish way, her grip dry and firm.我决定在这个坚实的基础之上继续努力。I am determined to build on this solid foundation.然而，我们脚下的地面却似乎是坚实而恒久不变的。The ground beneath us, however, appears solid and uncha...
高聚物都是由共价链联接原子而形成的长链分子所组成.Polymers consist of long molecular chains of covalently bonded atoms.同函奉上10箱货物共价5000美元的发票一张.Enclosed we hand you an invoice, $ 5 , 000, for 10 cases goods.另外蛋白质的共价修饰可对某些蛋白质的运动产生影响.Additionally, c...
他不断喘气,没法正常地呼吸.He was gasping away , finding it very hard to breathe properly.时钟已从修理店取回而又正常地走着.The clock has come back from the mender's and it is in ( good ) running order again.在失重状态下宇航员几乎不能正常地吃又不能正常地喝.Under gravit...
Diisopropyl succinate was synthesized from succinic acid and isopropanol with p - methyl benzenesulfonic acid as catalyst.摘要以丁二酸和异丙醇为原料及对甲基苯磺酸为催化剂,催化合成丁二酸二异丙酯.The usual thinners are water, ethanol, isopropanol, ethylene ...