blithely

I'd once seen him blithely overbid for a tiny James I miniature portrait.

我曾看到他为一幅小小的詹姆士一世微缩肖像漫不经心地叫出更高的价。

He blithely ignored her protests and went on talking as if all were agreed between them.

对她的抗议他毫不在意地拋诸脑后，只管继续往下说，仿彿他们之间什么都谈妥了似的。