Coal is the main energy source and coal industry occupies an important position in national economy of our country.

煤炭是我国的主要能源，煤炭工业在我国的国民经济中占有十分重要的地位。

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Mathematics concept occupies an important position in mathematics knowledge, but the comprehension obstacle of mathematics concept is a kind of main obstacle in the mathematics concept study.

数学概念在数学知识中占有重要的地位，而数学概念的理解障碍是数学概念学习中的一种主要障碍。

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Music appreciation teaching is a main way to cultivate the creative thought of students, which occupies important position in art education.

音乐欣赏教学在艺术教育中占有很重要的地位，是培养学生创造性思维的主要途径。

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It embraces coastal to mountainous landscapes and occupies a strategic position between the main cultural and artistic cities of Tuscany and some important seaside tourist centres.

UNESCO: NATURAL SCIENCES