concentrate

I find it difficult to concentrate on my homework when the TV is on.

(Chinese) 电视开着的时候，我觉得很难专心做作业。

Please be quiet; the surgeon needs to concentrate during the operation.

(Chinese) 请保持安静；外科医生在手术过程中需要高度集中注意力。

You can buy frozen orange juice concentrate at most supermarkets.

(Chinese) 你可以在大多数超市买到冷冻浓缩橙汁。

The chemical laboratory received a shipment of high-purity mineral concentrate.

(Chinese) 化学实验室收到了一批高纯度矿物浓缩物。