So cold calling is the skill of making a sales call to someone who is not expecting you.

因此，冷战的要求是技能，使销售拜访某人谁是不指望你。

youdao

Unsolicited means "not asked for." so cold calling is the skill of making a sales call to someone who is not expecting you.

unsolicited的意思是“不是别人主动要求的”，所以打“无约电话”也就是给那些不期望接你电话的人打销售电话。

youdao