Men aspire to be able to show off their six packs or their V-shape backs and there's a growing market of slimming pills aimed at men too.
男性渴望展示自己的六块腹肌或 V 型后背，针对男性的减肥药市场也在不断增长。
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That is why luxury cars have invariably used much smoother inline-six engines or v-8s-and why most of the new breed of four-cylinder motors rarely exceed two litres.
Unlike the better balanced straight-six or even the ultra-smooth V-12 engine, the humble four-cylinder generates an up and down vibration with a frequency of twice the crankshaft's rotational speed.