主考的英文：
be in charge of an examination
- You made a favourable impression on the examiners.
你给主考留下了很好的印象. - I submitted my papers to the examiner.
我把试卷交给主考老师。 - An examiner must frame his questions clearly.
主考人设问题时必须表达清楚。
n. 费用；电荷；掌管；控告；命令，指示；指责
v. （使）充电；使承担；指责；装载；索价；向前冲；控告；把...记入帐册
- charge the enemy
向敌人冲去 - mileage charges
按英里程计算的运费 - What is this charge for?
这项费用是什么？ - Is there an extra charge?
有额外的费用吗？ - The nucleus is formed of neutrons with no charge and protons with a positive charge
核子是由不带电荷的中子和带正电荷的质子形成的。
n. 考试；审查，调查，考察；检查，检验
- sit for an examination; take an examination
参加考试 - examine by auscultation
听诊用听诊法检查 - The examine is then directed to fix on the examiner's right eye.
接着就叫被检查人注视检查人的右眼。 - This examination is a real challenge.
这次考试是一次真正的挑战。 - The duration of the examination is three hours.
考试时间为三个小时。