“体面的”的英语可以翻译为：creditable，honourable ...

所有这些当众宣泄都是很失体面的。All this public outpouring is so undignified.她看上去挺体面的.She seems respectable enough.这是一家非常体面的“老式”旅馆，坐落在离皮卡迪利广场不远的地方。It was a highly respectable and what was called an "old-fashioned" hotel situated not far...