concentration

US /ˌkɑ:nsnˈtreɪʃn/

UK /ˌkɒnsnˈtreɪʃn/

A2 初級
  • n. 集中(於某事或某處);專注,集中;濃度;濃度

例句

One momentary lapse in concentration could prove fatal.

The concentration of nitrates in the drinking water has risen in recent years.