controlled within a certain scope 控制在一定范围内
"Announcement" is applicable to announcing within certain scope what should be complied with or well-known issues.
“通告”适用于在一定范围内公布应当遵守或者周知的事项。
But within certain scope, it promoted tobacco roots' primordius' coming into being When the concentration was lower, restrained which and promoted elongation of them when concentration was higher.
根系内源生长素促进烟草生根，但在一定范围内，浓度较低会促进根原基的发生，而浓度较高反而抑制根原基产生，并同时能够促进根系的伸长生长。
The cancellation can happen within a certain scope optionally, which means you cannot use a human task to meet this requirement. Instead, you can use the event handler to meet this requirement.
取消动作可以在一定范围内随时发生，这意味着您不能使用一项人工任务来满足这个需求，而是应使用事件处理程序。
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