ostentatious
[ˌɑ:stenˈteɪʃəs]
adj.
好夸耀的，炫耀的;
（态度）自负的;
讲排场的，铺张的;
外观美丽的，浮华的;
例句:
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She's got a lovely way with language without ever sounding ostentatious.
她的语言优美，丝毫无装腔作势之感。
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He gave an ostentatious yawn.
他张扬地打了个哈欠。
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They were neither aggressive nor ostentatious.
他们不好斗,也不爱炫耀自己.
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Recently there has been a move away from ostentatious sleeplessness.
来自BBC
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Their ostentatious recycling system for their branded water bottles is hilarious.
来自THETIMES
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Ostentatious displays of wealth are frowned upon.
来自NEWYORKER