兜销的英文：
【经】 canvass
v. 游说；（向…）拉选票；细究；彻底检查；征求；揽（货）
n. 劝诱；细查
Take their friends, start a canvass.
就先从他们的朋友开始入手调查。
The salesmen canvassed the whole city for subscriptions.
那些推销员走遍全城寻找客户。
I'm canvassing for the Conservative Party.
我在为保守党拉选票。
We still have half that neighborhood to canvass.
我们还有一半的街区要细查。
He's assisting us with the canvass.
他在协助我们调查。