The brownie and pineapple cheesecake have a marginal value, because their value is at the limit of their sign constraints.

布朗尼和菠萝芝士蛋糕都有一个临界值，因为它们的值受到了符号约束的限制。

youdao

At the first sign of trouble, the crowd melted away.

人群一看有麻烦，便渐渐散了。

《牛津词典》

The current interest in sign language has roots in the pioneering work of one rebel teacher at Gallaudet University in Washington D.C.

目前人们对手语的兴趣源于一位具有反叛精神的教师的开创性工作。他任教于世界上华盛顿加劳德特大学。

youdao

He said they would rise up at the first sign of a leader who wished to break their chains.

VOA: special.2009.06.18

It is in fact a very, very difficult and derivative act of the mind to try to forget that I am looking at a sign that says 'exit' and, in fact, just looking at what is there without knowing what it is.

事实上，试图忘记那个写着存在的标志,和只知道它存在而不知道它是什么，是非常难的事情。

耶鲁公开课 - 文学理论导论课程节选

So, what I want to do is, I want to discuss the scientific notion of language, at first restricting myself to systems like English and Dutch and American sign language and Navajo and so on.

因此,我想做的是,我想来谈谈语言的科学定义,首先我会将自己限定在,诸如英语,荷兰语,美国手语,或迪瓦霍语等语言系统之下

耶鲁公开课 - 心理学导论课程节选

Some of the hot money that poured out of hedge funds could easily return at the first sign of stability.

ECONOMIST: Hedge funds in trouble

In this world where every object was thrown away at the slightest sign of breakage or aging, at the first dent or stain, and replaced with a new and perfect substitute, there was just one false note, one shadow: the moon.

NEWYORKER: The Daughters of the Moon

Doctors in the U.K. argued vociferously that the most effective way to slow the progress of the disease is to give drugs at the first sign of dementia.

WSJ: Of NICE and Men