at a loos

• adv. 困惑(不知所措)

at a loos的用法和样例：

例句

用作副词 (adv.)

1. He looked up with a quizzical look on his face.
   他脸上带着困惑的神情抬头往上看。
2. He was perplexed at her mysterious utterances.
   他对她谜般的话感到困惑。