lukewarm
/ˌlu:kˈwɔ:m; `luk`wɔrm/ adj
1 (of liquids) only slightly warm; tepid （指液体）不冷不热的, 微温的
Heat the milk until it is just lukewarm. 把奶热一下, 温温就行.
2 ~ (about sb/sth) (fig 比喻) not eager or enthusiastic 不热烈的; 冷淡的
get a ,lukewarm re`ception 受冷漠的接待
Her love had grown lukewarm. 她的爱情已淡薄.