an expert at meaning in English
精于……的专家
Examples
- Rex soon became an expert at opening the gate .
雷克斯很快就成了一个开门能手了。 - Rex soon became an expert at opening the gate
Rex很快就成了一个开门能手了。 - Rex soon became an expert at opening the gate
雷克斯很快成了开门的专家。 - Help them become an expert at something
帮助他们在某方面成为一个专家。 - Help them become an expert at something
帮助他们成为某方面的能手。