他的表情显示出他的疲惫。
His expression shows his ___fatigue.
长时间的学习后，他感到非常疲惫。
After hours of studying, he felt extreme ___fatigue.
这座桥的钢缆由于长期承受重压而出现金属疲劳。
The bridge's steel cables showed signs of ___fatigue from years of heavy loads.
浙公网安备33010902004675号
