concentrate/ 'kɔnsəntreɪt /

1.vi.
集中精力

2.vt.[+place] 
to be concentrated in 集中在

3.vt.
to concentrate one's energies/attention on sth 集中精力/注意力于某事

to concentrate on sth
全神贯注于某事
4.vt.
(focus on) 集中注意力于某事

to concentrate on doing sth
集中精力于做某事