Additionally, because symptoms like headaches are so general and hard to pin to one cause, it's difficult to prove correlation.

加之，像头疼之类的症状如此普遍很难将它归因于某个特定因素，因而很难证明其相关性。

youdao

And who could forget thelayered milk-chocolate-coloredsatin outfit (complete with black beret and a pin in the silhouette ofAfrica) that he wore at last year's U.N. General Assembly session?

但谁又能忘记他在去年联合国大会会议期间穿的那套牛奶巧克力色缎子套装呢（戴着个黑贝雷帽，别了一个非洲版图的胸针）？

youdao

The experimental results indicated the performance of MADDOCK, pin and barrier injection screw was better than that of general injection screw.

结果表明新型注塑螺杆的性能比普通三段式螺杆有较大的提高。

youdao

If that were the only skeleton in the army's cupboard, it might be able to pin the blame on the unpopular general and get on with rebuilding its image.

ECONOMIST: Indonesia

"We need to pin down what is causing this, " said Louise Silverton, its deputy general secretary.

BBC: 'No complacency' over stillbirths