She practiced dancing five hours a day and had to have painkilling shots every two weeks to relieve the pain in her worn knees .

她每天练习五个小时的舞蹈，还需要依靠每两周服用止痛药来缓解其膝盖磨损所带来的疼痛。

Beyond its painkilling effects , aspirin prevents blood platelets sticking together and so thins the blood .

除了镇痛效果，阿司匹林防止血小板黏在一起从而使血液变稀薄。

Neuro-imaging shows that this deception stimulates the production of naturally occurring painkilling chemicals in the brain .

神经元成像显示这种欺骗行为可以促进大脑中自然分泌的阵痛化学物质的产生。

This would explain why women can suffer long-term pain more , and why there can be sex differences in response to opium-derived painkilling drugs .

这些应该能解释女性更能承受常时间疼痛的原因以及为什么会有对鸦片类镇痛药物反应的性别差异。

The injury has not required any painkilling injections nor has affected frank 's ability to play or take part in any one of chelsea 's training sessions .

这点伤不需要打封闭（止痛药），也不会影响弗兰克参加任何一堂训练课（比赛）。