New words：

denude [dɪˈnjuːd] v.剥光；使裸露；使光秃

Sample Sentences：

She goes up the steps to denude the statue.
Most trees are denuded of their leaves in winter.
Many hillsides had been denuded of trees.

New words：

mine [maɪn]
n.矿；矿井；地雷；水雷
v.采矿；布雷；埋雷于；用雷炸毁（车辆）

mining [ˈmaɪnɪŋ] n. 采矿；采矿业

Sample Sentences：

Mining is one of the country's main industries.
The engine is used for pumping water out of the mine.
Mining would pollute the lake and denude the forest.
The mines had first been worked in 1849, when gold was discovered in California.

denude [dɪˈnjuːd] v.剥光；使裸露；使光秃

New words：

industrial [ɪnˈdʌstriəl] adj.工业的；产业的；

Sample Sentences：

This chemical has a wide range of industrial uses.
Tianjin is an old industrial city, is an important industrial base.

New words：

industry [ˈɪndəstri] n. 工业；行业；生产制造

Sample Sentences：

We need to develop local industries.
The main purpose of industry is to create wealth.
In 1980, Iceland started to develop its tourist industry.
Mining industry is a basic industry of our country’s economy.

mine [maɪn]
n.矿；矿井；地雷；水雷
v.采矿；布雷；埋雷于；用雷炸毁（车辆）

mining [ˈmaɪnɪŋ]
n.采矿；采矿业
adj.开矿的
v.“mine”的现在分词

New words：

major [ˈmeɪdʒər]
adj.严重；主要的；重要的；大的
n.少校；专业课；主修课程
v.主修；专攻

Sample Sentences：

Mathematics is my major.
He's a major in the US army.
A major problem is the absence of water.
She majored in Maths and Physics at university.
They suffered some major setbacks during the fighting.