The surgeon placed catheters through the veins and arteries near the base of the head.

外科医生把导管插入靠近大脑底部附近的血管和动脉。

《柯林斯英汉双解大词典》

Use silicone rubber around the base of each leg and around the wood screw's head.

用硅酮橡胶仔细封好基座腿的下端以及木螺丝头。

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Measure the dimensions of your flash gun’s head and mould the base to fit – you may need to make a few cuts and bends in the opaque plastic to get the right size.

量一下你闪光器头部的尺寸，把剪下来的底儿修理一下，可能要做适当的弯曲，以使它们匹配。

youdao

But the work of turning the base pair data into the gold of new treatments has already begun, according to Dr Francis Collins, head of the US National Human Genome Research Institute.

BBC: What the genome can do for you

Prof Jack Crane said the bullet entered his head near the left ear and passed through the base of the skull.

BBC: State pathologist says Carroll bullet 'rapidly fatal'

He will be replaced by Andrew Mackenzie, currently head of the company's base metals business.

BBC: Marius Kloppers