it depends on what you are talking about if your talking about light here it is light can be classified as a wave when your talking about crests and troughs a crest is the top most part of the wave if you split the wave in half the trough has the same principle it is the lowest most part of the wave if you split it in half does that clarrify a little bit?
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It mean they had an orgasm.
about in mathematical terms mean to round!
putang = F*** a mean for used by Filipinos
What she took the wrong step mean
This a word used by traveler to mean impossibles things