n. steps consisting of two parallel members connected by rungs; for climbing up or down
n. ascending stages by which somebody or something can progress
v. come unraveled or undone as if by snagging
词态变化
复数形式:ladders
过去分词:laddered
过去式:laddered
现在分词:laddering
第三人称单数:ladders
常见例句
1
a of or relating to the abdomen and the urinary bladder
2
It originates in the same way as the lungs of air-breathing vertebrates, and in the adult may retain a tubular connection with the pharynx or esophagus. A sac or bladder full of air in an animal or plant
3
relaxes the muscles of the prostate and bladder
4
Like a bottle or inflated bladder
5
the title given to someone high on the corporate ladder, in a position of authority, etc
