Track the spare parts of the equipments. in stock, bring forward purchasing the spare parts in time.

跟踪设备备品备件的库存情况，及时提出备品备件的申购。

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Their three centre halves, sat deep, made it tough for Agbonlahor to break the back line, and they always had a spare man to either track the front-runner or follow Heskey when he dropped a little deeper.

BBC: Lee Dixon's tactical view