在同一个日历时间中有许多活动正在进行。
There are many activities going on in the same calendar timeline.
“最后的（森林）土地大规模抢占活动正在进行”。
有些人可以在很多活动正在进行的时候学习，另一些则需要绝对的安静。
Some people can study with lots of activities going on and others need absolute quiet. Adjust your study space to your style.
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