Hydrogen is used extensively in industry for the production of ammonia.氢气在工业上广泛用于制氨。He mobilized public opinion all over the world against hydrogen-bomb tests.他动员全世界的舆论反对氢弹试验。Carbon, hydrogen and oxygen combine chemicall...
Five per cent of children stammer at some point.5%的儿童在某个时期会口吃。A speech-therapist cured his stammer.一位言语矫治师治愈了他的口吃。He turned white and began to stammer.他脸色发白，说话开始结巴。...
Conclusion Photocatalyst and Indomethacin are effection to cure Actinic Cheilitis.目的观察光触媒加消炎痛治疗光化性唇炎的效果.Clinical usage : for the treatment and prevention of cheilitis, glossitis, seborrheic dermatitis and conjunctivitis....