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1·Strung together over time, these choices can accumulate into feats of progress unknown to other animals.

随着时间的推移，这些选择可以累积成其他动物未知的进步壮举。

2·Unknown to me, he had already signed the agreement.

他背着我已签了协议。《牛津词典》

3·There are many places on the earth that are still unknown to humans.

地球上还有许多人类未知的地方。

4·When diver Dawn Watson showed sponge expert Claire Goodwin what she found, Goodwin was sure that it was a kind of sponge unknown to science.

当潜水员道恩·沃特森向海绵专家克莱尔·古德温展示她的发现时，古德温确信这是一种在科学上未知的海绵。

5·Unknown to the students, the researchers studied their anonymized meal-card purchases for that semester—nearly 14,000 receipts for almost 500 students.

在学生们不知情的情况下，研究人员调查了他们在该学期餐卡的匿名消费情况——近500名学生的近1.4万张消费小票。

6·However, while Spaniards did put sugar, which was unknown to indigenous Americans, into chocolate beverages, this additive was not completely innovative.

然而，尽管西班牙人确实在巧克力饮料中加入了美国土著居民所不知道的糖，但这种添加剂并不是完全创新的。

7·The address is unknown to me.

地址未详。《新英汉大辞典》

8·That face was not wholly unknown to Marius.

这张脸在马吕斯看来并不是完全陌生的。

9·It grows into a habit, unknown to its possessors.

逐渐地在不知不觉中就养成了一种习惯。

10·The size of the returned markup is unknown to the logger (-1).

返回标记的大小对日志记录器未知(- 1)。