Noun : a detailed study of a subject, especially in order to discover (new) information or reach a (new) understanding ( Research was conducted ... ... <看更多>

SMART American Accent Training with Speech Modification.Start your free trial of our courses: https://courses.speechmodification.com/Join ... ... <看更多>

When you want to refer to a non-specific general study as "research", it doesn't need to be pluralized as the word "research" itself can ... ... <看更多>