It's incredibly hard to maintain patience at all times with your children.

始终对孩子保持耐心是非常困难的。

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youdao

If you don't exercise regularly, you might want to stretch at least three times a week to maintain flexibility.

如果没有定期锻炼，那么你可能需要每周至少伸展三次来保持柔韧性。

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Now of course it can be argued that Britain is not directly threatened by any of its neighbours and that defence is a hugely expensive thing to maintain in times of austerity.

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Margins high enough to build muscle in good times, and maintain at least some profitability in bad times.

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Management have also said that it has been difficult to maintain productivity when at times up to 1, 000 workers are brought in on short-term contracts.

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