on
ɒn
基本解释
prep. 在...之上
adv. ...上去
a. 正起作用的
[计] 打开
英文释义
a. in operation or operational
a. (of events) planned or scheduled
r. indicates continuity or persistence or concentration
r. in a state required for something to function or be effective
下一个单词：on a barter basis