1·Do your customers believe - truly, honestly believe - that your product is worth their money? Or are they buying from you under pressure from underhanded sales tactics?
你的顾客是否相信——真心诚意地相信——你的产品值得他们的金钱？或者他们从你处购买是出于秘密销售策略所带来的压力？
2·The dark are very astute and know how to use underhanded means to catch you out.
黑暗势力非常狡猾，知道如何用秘密手段来迷惑你们。
1·On the other, capable of the most underhanded forms of betrayal.
另一方面，也可以进行最卑劣的各种背叛。
2·He played an underhanded trick on me.
他跟我耍了一个卑劣的花招。