The plane is an eight-seater with twin propellers.这架飞机有8个座位，靠双螺旋桨推进。The water was thrashing and churning about under the propellers.水在螺旋桨下面打旋、翻滚.The ship's propellers churned the waves to foam.轮船的推进器将海浪搅出泡沫....
By 1922 the public schools had an enrolment of nearly 16,000 students.到1922年，公学的注册学生数接近16,000。A fee is charged for each year of study and is payable at enrolment.学费每年收取，可在登记注册时缴纳。You will be given a reading list at enrol...