He had been riding in Hyde Park, but felt unwell as he was being driven back to his office late this afternoon.他一直在海德公园骑自行车，后来感到不舒服，近黄昏时被人开车送回办公室。When we are tired, tense, depressed or unwell, we feel pain much more...当我...
Weak acids ionize partly ( ionize ) in water to give hydrogen ion.弱酸在水中部份电离 ( 电离 ),放出氢离子.Weak alkalis ionize partly ( ionize ) in water to give hydroxide ion.弱碱 在水中部份电离,放出氢氧离子.Most inorganic salts ionize in water solutio...