The machine directs a powerful beam at the affected part of the body.

这种机器将很强的射线对准身体感染部位。

《牛津词典》

Symptoms of DVT are principally pain, tenderness and swelling of the affected part.

深静脉血栓形成的症状主要是受影响部位疼痛、压痛和肿胀。

youdao

I've heard that the massage can relieve pain of the muscle of the affected part, improve blood circulation.

我听说按摩可以减轻受损部位肌肉疼痛，改善血液循环。

youdao

Cohen says part of the problem is an urban bias among policy elites in both the donor and affected countries.

VOA: standard.2010.07.16

Dumfries and Galloway is the worst affected part of Scotland, with 97 confirmed cases so far.

BBC: News Online

Sub-Saharan Africa remains the most severely affected part of the world, though some countries there have made impressive efforts in reducing fresh cases.

BBC: Further big drop in new HIV infections among children

Sub-Saharan Africa and the Caribbean (the second-worst affected part of the world) have particularly high levels of disassortative mating between young girls and older men.

ECONOMIST: A turning-point for AIDS?