Dogs have a keen sense of smell.

狗的嗅觉很灵敏。

《牛津词典》

It helps me have a keen mind to report something at a fast speed and have a strong body to work day and night.

它帮助我保持头脑敏锐，能够快速作报告，并且拥有一个强壮的身体来日夜工作。

youdao

"Coming from Iran, I have a keen interest in Middle Eastern science," he says.

他说：“我来自伊朗，对中东科学有着浓厚的兴趣。”

youdao

Few companies, especially the biggest ones, have a keen grasp of their marketing operations.

FORBES: Junk Mail Bytes It

However, some people with the condition are highly intelligent and have a keen attention to detail.

BBC: SAP in autism recruitment drive

Mr Griffiths was known to have a keen interest in militaria and attended a number of fairs at Bisley, police said.

BBC: Michael Griffiths