constraint (n)
/kənˈstreɪnt/
sự ràng buộc, sự hạn chế
something that limits the range of a person’s actions or freedom
![constraint](https://7vel.com/assets/assets-v2/img/library/constraint.jpg)
contamination (n)
/kənˈtæm.ɪ.neɪt.ʃən/
sự ô nhiễm
the process of making something dirty, polluted, or poisonous by adding achemical, waste, or infection
![contamination](https://7vel.com/assets/assets-v2/img/library/contamination.jpg)
deplete (v)
/dɪˈplit/
làm cạn kiệt
to reduce something in size or amount, especially supplies of energy, money, etc.
![deplete](https://7vel.com/assets/assets-v2/img/library/deplete.jpg)
extinction (n)
/ɪkˈstɪŋkʃn/
sự tuyệt chủng, sự biến mất
a situation in which a plant, an animal, a way of life, etc. stops existing
![extinction](https://7vel.com/assets/assets-v2/img/library/extinction.jpg)
consumption (n)
/kənˈsʌmp·ʃən/
sự tiêu thụ
the use of something such as fuel or energy, or the amount that people use
![consumption](https://7vel.com/assets/assets-v2/img/library/consumption.jpg)
crude oil (n)
/krud ˈɔɪl/
dầu thô
oil from underground that has not yet been made into other products
![crude oil](https://7vel.com/assets/assets-v2/img/library/crude oil.jpg)
reserve (n)
/rɪˈzɜrv/
nguồn dự trữ
something kept for a particular purpose or time, or the state of being kept for future use by someone
![reserve](https://7vel.com/assets/assets-v2/img/library/reserve.jpg)
modification (n)
/ˌmɑː.dɪ.fɪˈkeɪ.ʃən/
sự sửa đổi, sự biến đổi
the process of changing something slightly
![modification](https://7vel.com/assets/assets-v2/img/library/modification.jpg)
petroleum (n)
/pəˈtroʊ.li.əm/
dầu mỏ
oil that is found under the ground or the ocean and is used to produce gasoline, paraffin, diesel oil, etc.
![petroleum](https://7vel.com/assets/assets-v2/img/library/petroleum.jpg)
![](themes/7vel/images/chan_ghichu.png)
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