Many groups can be added by nucleophilic substitution on a diazonium salt.许多基团可通过向得自胶的重氮盐作亲核取代而加以导入.Most direct substitution of groups bound to an aromatic nucleus is limited to diazonium salts.大多数连于芳核能被直接取代的基团仅限于重氮盐....
The concurrence of their disappearances had to be more than coincidental.他们同时失踪肯定不仅仅是巧合。The doctor may seek the concurrence of a relative before carrying out the procedure.医生可以征得亲属的同意后再施行此项手术。Any change ought not to be m...
这个摄影棚并不隔音。The studio isn't soundproof.登山者在悬崖的岩棚上休息.The climbers rested on a sheltered ledge jutting out from the cliff.我们暂时在这里搭个棚 吧.Let's put up a shed here for the time being....
Wood does not sink in water.木头不会沉入水中.Anything anybody said to him to try and buck him up wouldn't sink in.任何人对他说的任何劝他振作起来的话都不会起作用。Hagen let this sink in.老头子的这个分析在黑根的思想上留下了深刻的印象....