since them,billions of people have used computers to deal with information句型转换 since,then,computers billions of pepople to deal with information

since them,billions of people have used computers to deal with information句型转换 since,then,computers billions of pepople to deal with information We cut down and burn billions of trees every year but we replace hardly any of them.中文翻译 用 billions of造句 giving away their billions Since them many ___ (改变） have taken place. Since he put the clothes on ,he____(wear)them We have called them that since we were Since many of them work during the day about half of them had since died.中since如何解释 it can lift them with ease and since there are no wheels是什么意思and since 1.3 billions people还是1.3 billions of people billions of的中文意思 billions of dollars 什么意思 since I realized,swallowing hard,that about half of them had since died.这句话中since什么意思,翻译. I realized,swallowing hard,that about half of them had since died.这句话中since什么意思,翻译 Some champions can make ____ dollars a year.A ten billions ofB billions ofC twenty billions ofD much billion of billions of 是什么意思?用初二学的