“勾引”是个相对比较长的过程，算个Project。你得有计划，有策略，控制时间和成本，画个PERT图啥的来优化，反正比较serious。比如象泥泥计划的，过年吃饺子后，昏天黑地里，软音乐渐起，金蟾啮锁，玉虎牵丝。。。这是Projected的“勾引”。:DDDDD
“Turn on”就不同了，可能是Project的结果，但更可能是既兴而为。兴之所至，来如风雨挟雷电，去如春梦了无痕；可以随时随地，不拘42式；可以随配合菜，丰俭由人。。。这叫啥？
不知道中文里有没有这个词“休闲性爱”？
英文里倒是有个Casual Sex（见下面解释），但好象完全没有“休闲”的意思。如果正本清源，该词是被严重歪曲和忽略了。:DDDDDDD
Casual sex refers to certain types of sexual activity outside the context of a romantic relationship. The term is not always used consistently: some use it to refer to any extramarital sex, some use it to refer to sex in a casual relationship, whereas others reserve its use for one-time encounters, promiscuity, or to refer to sex in the absence of emotional attachment or love.