She was jumping up and down.
她上上下下地蹦着。
She was jumping up and down.
她上上下下地蹦着。
Most teachers hold that students will come to no great harm if they go to a discotheque now and then.
大多数教师认为学生们偶尔上上迪斯科舞厅并无大害。
Our employee can communicate with all levels of staff in American Airlines and his work will be recognized by all levels of staff as well, which is a treasurable corporate culture.
在美航工作，可以和上上下下的同事
通，更可以让自己的工作会被上上下下的同事认可，这是一种很珍贵的企业文化。
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