I do not hear the tones used in mandarin where tones can denote as many as 6 totally unrelated words from one spelling.

我听不到普通话中的音调，就是可以表示多达6种完全不相关的单词拼写的音调。

youdao

As you can see, there are no special characters to denote a variable.

可以看到，表示变量并不需要任何特殊的字符。

youdao

There was, at times, a want of spirits about him which, if it did not denote indifference, spoke of something almost as unpromising.

他有时候没精打采的，如果不是表示态度冷淡的话，就说明前景有点不妙。

youdao

It could be useful to denote things such as the sun's mass (2.2 hellatons) and energy output (approximately 0.4 hellawatts).

ECONOMIST: Scientists measure a few yoctonewtons for the first time

This week, Maryland will likely join 30 other states that denote violence against gays as a hate crime.

NPR: Fudging the Numbers on Hate Crimes

In addition, software allowed "complete control" over subtle facial elements such as blushing and even the diameter of Milo's nostrils, which he said could denote stress.

BBC: 'Virtual human' Milo comes out to play at TED in Oxford