These beings are very numerous, and their number is incalculable: they can be spoken of as innumerable.
其中多有一生补处,其数甚多,非是算数所能知之,但可以无量无边阿僧祗说。
In control problems the uncertain variables are often bounded, thus uncertainty can be spoken of as "sets" and uncertain systems can be studied by the methods of set theory.
控制问题中不确定因素的变化范围通常是有界的,因此可把不确定性描述为“集”,从而能用集合论方法讨论不确定性系统。
Now elsewhere in the world, Iceland may be spoken of, somewhat breathlessly, as western Europe's last pristine wilderness.
现在在世界其他地方,可能说起冰岛,人们会有些喘不过气来,说它是西欧最后的原始荒野。
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