Definition

1. Noun:
   • The sky; the air; the atmosphere: "không trung" refers to the expanse of space above the Earth's surface, the sky, or the air. It is the domain where aircraft fly and birds soar.

Usage Examples

• Noun:
  • Máy bay đang bay lượn trên không trung. (The airplane is soaring in the sky.)
  • Chim én liệng giữa không trung. (Swallows glide through the air.)
  • Bầu không trung hôm nay thật trong lành. (The air today is very fresh.)

Advanced Usage

• "giữa không trung": in mid-air; in the sky.
  • Quả bóng bay lơ lửng giữa không trung. (The balloon floated in mid-air.)
• "trên không trung": in the air; in the sky.
  • Hai chiếc máy bay gặp nhau trên không trung. (The two planes met in the air.)

Variants and Related Words

• Không gian (noun): space; outer space. (Refers to the vast expanse beyond Earth's atmosphere or a general area/volume.)
• Bầu trời (noun): the sky; the heavens. (Specifically refers to the sky as seen from the ground.)
• Khí quyển (noun): atmosphere. (Refers to the layer of gases surrounding the Earth.)

Synonyms

• Trời (noun): sky; heaven.
• Không khí (noun): air; atmosphere. (Often refers to the air we breathe or the ambient atmosphere.)

Related Phrases

• Chiến tranh không trung (noun phrase): air war; aerial warfare.
• Lực lượng không trung (noun phrase): air force; aerial forces.

Related Idioms

• "Lênh đênh trên không trung": to drift or float in the air; often used metaphorically to describe a state of uncertainty or being adrift.
  • Sau khi tốt nghiệp, anh ấy cảm thấy mình cứ lênh đênh trên không trung. (After graduation, he felt like he was just drifting in the air.)

1. Air