The operation is carried out under a general anaesthetic.该手术是在全身麻醉情况下实施的。In those days, dentistry was basic. Extractions were carried out without anaesthetic.那时候，牙科学刚起步，拔牙都不打麻药。The anaesthetist gave the patient an anaest...
These lasers usually employ chemical combustion to energize directly the lasing process by various one - way reactions.这些激光器一般利用化学燃料,通过各种 单向 反应直接驱动激射过程.He helped energize and mobilize millions of people around the nation...