groan造句
The timbers
groan and creak and the floorboards shift.
这些木头在吱吱嘎嘎作响，木地板有些摇晃。
Bookshelves
groan under the burden of books on threats to the environment.
书架上摆满了有关环境威胁的书，不堪重负。
The platforms
groan with homeward-bound commuters.
月台在下班赶着回家的通勤族脚下不堪重负。