用于编写在线词典的英英词库，华清远见课程可用
a indef art one
abacus n.frame with beads that slide along parallel rods, used for teaching numbers to children, and (in some countries) for counting
abandon v. go away from (a person or thing or place) not intending to return; forsake; desert
abandonment n. abandoning
abase v. ~ oneself/sb lower oneself/sb in dignity; degrade oneself/sb ;
abash to destroy the self-possession or self-confidence of:disconcert
abashed adj. ~ embarrassed; ashamed
