telemarketing /ˌtɛləˈmɑɚkətɪŋ/ noun Learner's definition of TELEMARKETING
[noncount] chiefly US
: the activity or job of selling goods or services by calling people on the telephone电话销售；电话推销 — telemarketer
/ˌtɛləˈmɑɚkətɚ/ noun, plural telemarketers [count]