Test new theories.
Meaning: This sentence means to examine or evaluate new ideas or explanations for something to see if they work or meet certain standards. It's like saying, See if a new idea or explanation is correct.
Choice of Words: Test is a verb that means to examine or evaluate something to see if it works or meets certain standards. New means something that is recent, not known or experienced before. Theories are ideas or explanations for something that is based on evidence or reasoning.
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