By default, wordwrap will attempt to wrap at a word boundary.If you want to cut off at the exact character length, pass the optional third parameter of true.是什么意思_By default, wordwrap will attempt to wrap at a word boundary.If you want to cut off at the exact character length, pass the optional third parameter of true.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句