Based on climate material, the simplified terrestrial carbon cycle balance (TCCB) modelwas established, which is semi-me......

模拟英语导游是高职院校旅游英语专业的核心课程。由于实训课程开设不足的原因，学生的涉外导游能力很薄弱，就业和从业能力较差，直接影......