Definition

1. Noun:
   • Atmosphere: The envelope of gases surrounding a planet, particularly Earth. This is the direct and primary meaning of "quyển khí" in scientific contexts like geography and geology.

Usage Examples

• Noun:
  • Quyển khí của Trái Đất rất quan trọng cho sự sống. (The Earth's atmosphere is very important for life.)
  • Các nhà khoa học nghiên cứu sự thay đổi của quyển khí. (Scientists study changes in the atmosphere.)

Advanced Usage

• "quyển khí Trái Đất": Earth's atmosphere.
  • Ô nhiễm đang làm hỏng quyển khí Trái Đất. (Pollution is damaging the Earth's atmosphere.)

Variants and Related Words

• Khí quyển (n): This is a more common and standard synonym for "atmosphere" in modern Vietnamese.
  • Khí quyển được chia thành nhiều tầng. (The atmosphere is divided into several layers.)

Synonyms

• Atmosphere: The layer of gases surrounding a planet.
• Air: The invisible gaseous substance surrounding the earth (in a less scientific context).

Notes on Usage

• "Quyển khí" is a scientific term. In everyday modern Vietnamese, "khí quyển" is the far more frequently used word for "atmosphere." "Quyển khí" may be encountered in older texts or technical writings.