atprep.在；向；达n.基普(老挝货币基本单位)(=att)；[化]砹(极不稳定放射性元素)abbr.密封的(=airtight)abbr.气温(=air temperature)atota主动脉

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。