What is combination defence?

什么是混合防守？

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She argues with Coach Chen about the combination defence (combined defence).

她和陈教练讨论混合防守。

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Both sides attempted to play rugby in the second half but the combination of tight defence and bad conditions meant it was never a realistic tactic.

BBC: Dragons 3-3 Wasps

After Serge Betsen had gone close for Wasps, Northampton assumed control and several times went close to scoring, but a combination of solid Wasps defence and Saints errors kept them scoreless.

BBC: Wasps 9-5 Northampton

The Ospreys seemed rattled by the score and a combination of mistakes and ferocious Saracens defence meant they struggled to find any momentum.

BBC: Saracens 19-10 Ospreys