没有一定的形状、体积，能自由散布的物体Object that has no definite shape or volume and can disperse freely气体Gas没气了Out of breath气厥Fainting due to lack of breath气促Shortness of breath气息Breath一气呵成Finish something in one go自然界寒、暧、阴、晴等现象Natural phenomena such as cold, warm, cloudy, sunny, etc.气温Temperature气象Meteorology