Every day of sunshine strengthens the feelings of optimism...每天晒太阳让人心情更加开朗。As she spoke she felt a bubble of optimism rising inside her.当她讲话时，她感到内心的乐观情绪越来越高涨。In the interview he gave some grounds for optimism...他接受采访时阐述了...
She stood aghast at the snake.她被蛇吓呆了。She watched aghast as his life flowed away.看着他的生命逐渐消逝，她惊骇万分。His colleagues were aghast at the sackings...他的同事们对于这些解雇感到很吃惊。She was aghast at the extent of the damage to her car.她的汽车的损坏...
这些不同的晶面,具有很不相同的化学性质, 特别是对化学腐蚀剂的反应不一致.The chemical properties of these surface differ considerably, particularly in their reaction to etchants.但是化学腐蚀剂例如明矾现在很流行.But chemical mordents mordants such as allon alum are popular...