1.focus on 专注于

例句:Their talks are expected to focus on arms control.

他们的会谈预计会集中讨论军备控制问题。

2.a handful of 少量的；小部分的

例句:A handful of onlookers stand in the field watching.

少数几个旁观者站在现场观看。

3.artificial intelligence 人工智能

例句:They have made great progress in machine translation and artificial intelligence.

他们在机器翻译和人工智能方面取得了重大进展。

4.clinical practice 临床实践

例句:Eminent senior doctors and dentists taking part in research, teaching or clinical practice.

杰出的高级医生和牙医参加研究，教学和医学实践。