销售代表们留下的华而不实的画册和小册子，往往是在高档餐厅用餐、在温暖和阳光充足的地方开会，以及铺天盖地的促销产品之后才出现的。
The flashy brochures and pamphlets left by the sales reps are often followed up with meals at expensive restaurants, meetings in warm and sunny places, and an inundation of promotional gadgets.
主人欣赏我，我才留下来的——因为她喜欢我。
科学家们是凭借石头在身后的地上留下的痕迹才知道它们在动，其实他们自己并没看见。
Scientists know the rocks move because they leave narrow tracks trailing behind them, but they haven't actually seen it happen.
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