B2 a guess of what the size, value, amount, cost, etc. of something might be

中文解释

估计;估算;估价 The number of people who applied for the course was 120 compared with an initial estimate of between 50 and 100. 最初估计申请选修这门课程的学生也就是50到100人，可实际上报名的有120人。