- 1. ignorant; in the dark; at a loss
 - ♦ ~无知 be utterly ignorant; be in the dark
 - ♦ ~不知所措 be at a loss what to do; be at sea
 - ♦ 显出~的神情 look blank; wear a blank expression
 - 2. frustrated; disappointed
 - ♦ 她坐车走了, 我~若失地站在那里。 She got on the bus and was gone, leaving me standing there with a feeling of loss.