Çocuklar kanapenin üstünde yukarı aşağı sıçramaya başladı.
- The children started bouncing up and down on the couch.
Tom yatağın üstünde yukarı aşağı sıçramaya başladı.
- Tom started bouncing up and down on the bed.
... the relationship between E and m is very simple, it takes one second to write it down on a ...
... I've got it marked down on my calendar. ...