keen

He is a keen gardener who spends every weekend planting flowers and vegetables.

(Chinese) 他是一个热衷园艺的人，每个周末都花时间种花种菜。

The students were keen to start the experiment and learn about chemical reactions.

(Chinese) 学生们渴望开始实验，了解化学反应。

Dogs have a keen sense of smell that allows them to track scents for long distances.

(Chinese) 狗具有敏锐的嗅觉，使它们能够长距离追踪气味。

The detective's keen eyes noticed a small clue that everyone else had completely missed.

(Chinese) 侦探敏锐的目光注意到了一个所有人都完全忽略的小线索。