A major difficulty is assessing whether this tool-using behaviour is a sign of intelligence.

一个主要的困难是评估这种使用工具的行为是否是智能的标志。

youdao

Scientists have long wondered where our handedness comes from. All other tool-using primates show no distinct hand preference when it comes to holding the stick or stone.

科学家很久以来一直不明白我们使用那只手的习惯从何而来。当手持棍棒或石头时，其他所有使用工具的灵长类并没有明显表现出用哪只手的偏好。

youdao

Using this tool can save you manual effort in the migration.

使用此工具可以减少迁移中的手动操作。

youdao

That is our mission,". "And the president described it in no uncertain terms in his inaugural when he said, 'Our nation is at war against a far-reaching network of violence and hatred.' And to win this war against al-Qaida, the administration continues to be unrelenting, using every tool in its toolbox and every arrow in its quiver,"

VOA: standard.2009.08.06

And, although New Caledonian crows, which also make tools in the wild, can manage the hookmaking trick, wild rooks are tool-using virgins.

ECONOMIST: Tool use by non-tool-using animals

It was a major growth moment for me as an artist because, you know, I'm committed to my mission of using hip-hop to - as a tool for social change and using hip-hop as a way to spread information, correct information about the music and the culture and about me as an American and me as a black American woman, and going to Indonesia was an intense experience.

NPR: Hip Hop Takes on Diplomatic Role with State Department

He said that detectives were not simply using their new powers to harass motorists - but using an important new tool to try to make the roads safer.

BBC: NEWS | UK | On the road with the traffic cops