A:I saw an ad for that new gym downtown — free one-year memberships, no strings attached.
我刷到市区那家新健身房的广告——免费送一年会员，说毫无附加条件。
B:A whole year for free? What's the catch? Deals like that usually auto-renew at full price once the year is up.
免费一整年？有什么猫腻？这种优惠通常到期后自动按全价续费。