Mary hadn't slept for long when the order came. (not do sth. for long... when...)
马力还没睡多长时间，突然命令来了。(睡觉动作中止。)
There's something harmful to us on the Internet. Playing games for a long time may do harm to our health. …there's sth harmful to our …
网上有一些东西不利于我们健康、长时间玩会损害我们的健康英…
There's something harmful to us on the Internet. Playing games for a long time may do harm to our health. …there's sth harmful to our …
网上有一些东西不利于我们健康、长时间玩会损害我们的健康英…
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