1.The marginal cost of doing something wrong "just this once" always seems alluringly low.
做错误的事情，“就这一次”，其边际成本看起来总像是非常低。
2.Which of the myriad alluringly (and sometimes improbably) titled degree courses?
诱人的（或者有些明显不真实的）课程名称中的哪一个呢？
3.Women need to dress alluringly but not in a cheap way.
女式则需打扮的诱人而不轻浮。