n.胸；胸膛；胸腔
Unlike an insect, a spider has eight legs, and its head and thorax are oined. 和昆虫不一样，一只蜘蛛有八条腿，而且它的头和胸是连在一起的。
The thorax is divided into three compartments. 胸腔分为三个部分。
n.气胸
n.(=haemothorax)[医]血胸；胸膜腔积血
血气胸
