He lurched through the bar, smiling inanely.

他傻乎乎地微笑着，踉踉跄跄地穿过了那个酒吧间。

《柯林斯英汉双解大词典》

Cut to Ross emerging from a hallway, grinning inanely.

罗斯从过道出现，傻笑着。

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As she randomly and inanely cavorted, Ms. Guillem paused, in a would-be show of feisty freedom, to perform without socks and shoes.

WSJ: Sylvie Guillem | Leaving Ballet Behind | Dance Review by

The wallow was where El Solitario Jorge spent much of his time, smiling inanely and with the odd bit of food trailing from his mouth.

ECONOMIST: Nora Ephron and Lonesome George