音标：['θri:fәuld]
a. 三倍的, 三重的
ad. 三倍地, 三重地
在线英汉词典
threefold的短语、例句：
threefold adj, adv three times as much or as many 三重（的）; 三倍（的）.

标签：threefold,用法,音标,短语