undertone解释为：低音, 浅色, 底色, 潜在的含义
undertone详细解释
n.低音, 浅色, 底色, 潜在的含义
例句与用法：
There were undertones of relief as the visitors left.
客人走后大家都暗暗松了口气。
详细释义：
n.
1. 低声; 小声
They are talking in undertones.
他们在低声说话。
2. 淡色, 浅色; 底彩
3. 潜在的含义
There is an undertone of regret in what he said.
他的话中带有悔意。
4. 市场的潜在倾向
