This was no time to make a speech.这不是长篇大论的时候。The President is scheduled to make a speech tomorrow.总统定于明天发表讲话.I'm always nervous when I make a speech.在发言时我总是感到紧张....
Regular exercise can increase your basal metabolic rate.定期运动能够提高你的基础代谢率。Your metabolic rate is the speed at which your body transforms food into energy.新陈代谢率是身体把食物转换为能量的速度。Chemical carcinogens generally require metabolic...