Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.

Further, the term "The Celsius or Centigrade thermometer" was again used in reference to a particular type of thermometer at least as early as 1850.
The Celsius or Centrigrade thermometer was again used to refer to a particularly type of thermometer around 1850.

She has a three-octave vocal range Accessed August 5, 2008 and a distinctively rapid vibrato.
She has a vocal range spanning three octaves (Accessed August 5, 2008) and a fast vibrato.

The nervous system derives color by comparing the responses to light from the several types of cone photoreceptors in the eye.

The nervous system gets color by comparing the responses to light from special areas in the eye.

