Focusing device
[电] 焦点调整装置
🧩 词语组成解析
[化] 调焦; 聚焦
🗣️ 情景例句
Keep your hands to yourself.
别动手动脚的。
He will be here in 30 minutes.
他在三十分钟内会到这里。
Sally was very excited because she had never travelled on a train before.
萨莉非常激动，因为她从未乘过火车。