hard sell

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He acknowledges that in the west eating insects is a hard sell: “It is very important how you prepare them, you have to do it very nicely, to overcome the yuk factor.
他承认，让西方人吃昆虫是强行推销：如何烹饪非常重要，你必须做的非常可爱，以克服令人恶心的因素。
Peter Thorne, a climatologist at the Co-operative Institute for Climate and Satellites, in North Carolina, describes it as “quite a hard sell in periods that are data sparse”.
彼得·索恩是北卡罗莱纳州一位气候和卫星合作研究所的气候学家，他将其形容为“数据稀疏时期的强行推销”。
Voters may continue to blame them for things that go wrong at local level, and giving town halls serious fiscal powers is a hard sell in a country where the property-based local tax is hated.
选民依然可能会指责他们，尽管麻烦是地方制造的。而给地方政府实际的财政权利实际上是强行推销，因为基于财产的地方税在英国很不受待见。
ecocn.org

Here is House minority leader John Boehner. "I know the president is doing the hard sell on this bill, telling Democrat members that his presidency is on the line, but this vote is not about saving a presidency or saving a politician, this is about doing the right thing for the American people."
When you buy high and sell low it's really hard to generate returns, even if you do it with great enthusiasm and great volume.
当你高价买入低价卖出时,是很难产生回报的,不管你有多大交易热情或有多大交易量
耶鲁公开课 - 金融市场课程节选
So there's a panic in the market for securitized mortgages - and the price is often very low or if it's they're very hard to market and hard to sell.
所以，在市场上,证券化按揭贷款引起了恐慌,并且价格通常很低或者说如果它,他们很那出售而且对市场不利。
耶鲁公开课 - 金融市场课程节选

Not trying to belittle Google, but that was not a hard sell at all.
FORBES: When Should A Website Launch As Invite-Only?

a method of selling in which the person selling tries very hard to persuade the customer to buy something

A hard sell is a method of selling in which the salesperson puts a lot of pressure on someone to make them buy something.