- out-tray
- outage
- offensive
- operator
- overtime
- oblivious
- omit
- occupation
- on and off
- overseas
- option
- overdraft
- outpatient
- organ donor
- overdue
- ornament
- order
- objective
- on behalf of
- optimistic
- operate
- outlet
- obstacle
成人英语托业单词单词大全〔O 〕课程包含23个英语单词词汇。
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