单词	semipermeable
释义	semipermeable /sɛmɪˈpəːmɪəb(ə)l / adjective (Of a material or membrane) allowing certain substances to pass through it but not others, especially allowing the passage of a solvent but not of certain solutes: a semipermeable membrane... In dialysis a solution is passed over a semipermeable membrane, allowing solutes up to a certain size (but not larger molecules) to diffuse across the membrane to a second solution. A semipermeable membrane allows small solvent molecules to pass through, but not the larger solute molecules. Graham found that the rate at which some substances, such as inorganic salts, pass through a semipermeable membrane is up to 50 times as great as the rate at which other substances, such as proteins, do so.
随便看	empty-headed empty-headedness empty-hearted empty nester empty net empty-netter empty-pated empty promise Empty Quarter empty-skulled empty suit empty vessels make most noise (or sound) empty word empurple empusa empyema empyematic empyematous empyemic empyreal empyrean empyreum empyreuma empyreumatic empyrical

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。