An unknown number of demonstrators were arrested.
不知多少示威者被逮捕了。
The sign X denotes an unknown number.
符号表示一个未知数。
The sign X stands for an unknown number.
在代数中，符号x通常代表一未知数。
In math, X is used to stand for an unknown number.
在数学中，X被用来代表一个未知数。
They have an unknown number of binary digits, which you cannot control.
他们有数目不详的二进制数字，你无法控制。
Haiti has been struck by a 7.0 earthquake, killing an unknown number of people.
海地今晨发生7.0级大地震，目前死亡人数尚无统计。
Haiti has been struck by a 7.0 magnitude earthquake, killing an unknown number of people.
海地今晨发生7.0级大地震，目前死亡人数尚无统计。
When most of us get a text message on our cell phone from an unknown person, we usually say "sorry, wrong number!"
当我们收到陌生人的短信时,我们通常会说：“对不起, 你发错了！”
When most of us get a text message on our cell phone from an unknown person, we usually say "sorry, wrong number!"
当我们收到陌生人的短信时,我们通常会说：“对不起, 你发错了！”
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