This course consists of two lectures and three tutorials every week.这个课程每周包括两次讲座和三次辅导课.The tutorials have helped many get through high school.个别辅导帮助许多学生读完了中学.The methods of study include lectures, tutorials, case studies...
运动员在比赛中表现出坚韧的斗志.The athletes displayed great tenacity throughout the contest.用于提取这种油的树脂取自于一种矮小坚韧的树。The resin from which the oil is extracted comes from a small, tough tree.棍子落下去,他觉得好像打在坚韧的橡胶上.He felt the rubbery solidity...