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What precisely triggered off yesterday's riot is still unclear.
具体是什么引发了昨天的暴乱仍然不清楚。
《柯林斯英汉双解大词典》
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Who triggered off the rebellion?
是谁触发了这次反叛？
youdao
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The smoke triggered off the alarm.
这些烟把警报器触响了。
youdao
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The smoke triggered off the alarm.
这些烟把警报器触响了。
youdao