A diet high in tryptophan - an amino acid converted by the body into the feel-good chemical serotonin - can improve mood and wellbeing, pediatrician and natural health expert Caroline Longmore said. 儿科医生和健康专家卡罗琳.
He gave me a taste of his acid wit. 他让我尝到了他敏锐尖刻之机智的滋味。
Acid irritates the stomach lining. 酸能刺激胃黏膜。
Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
I am doing an experiment of neutralizing acid. 我在做一个中和酸的实验。