癮君子的惡夢
If you experience sudden pain in the belly and flanks, as well as high blood pressure, beware.
要是你突然感到腹部及腰部疼痛，並伴隨著高血壓，那就得當心了。
sudden(adj.)突然的flank側面、腰部blood pressure血壓
You might be suffering from acute arterial occlusion, also known as “a stroke in the kidney.”
你可能得了急性動脈梗塞，又稱作腎臟中風。
suffer from受苦於、罹患acute=severe十分嚴重的arterial occlusion動脈栓塞stroke中風
This refers to a severe blockage of the artery to the kidney.
這指就是腎臟動脈嚴重阻塞。
refer to指的是
Like other major organs, the kidneys need a good supply of blood.
腎臟就像其他主要的器官，需要良好的血液供應。
organ器官、organ donor器官捐贈者、organ transplant器官移植、管風琴good相當大的supply補充
If the blood flow through its main artery is reduced, the organ will suffer damage.
要是通過主動脈的血流減少，該器官就會受損。
flow through流經reduce(v.)減少damage(n.)損害
This happens when blood clots travel through the bloodstream before lodging in the kidney artery.
當血塊經由血液流動、卡在腎臟動脈時，這種狀況就會發生。
blood clot血塊bloodstream血流lodge in卡住
Such materials can narrow or block the kidney artery or one of its smaller vessels.
這類物質會使腎臟動脈或較小的血管分支變窄或阻塞。
narrow(v.)使狹窄vessel(n.)血管、船艦
People with certain heart conditions are particularly at risk.
患有某些心臟疾病的人特別有風險。
condition(n.)情況、medical condition健康狀態particularly特別地=especiallyat risk處於風險
For example, if the heart valve cannot open enough, the heart will not be able to pump enough blood to the organs, including the kidneys.
舉例來說，如果心臟瓣膜張開的幅度不足，那心臟就無法將足夠的血液輸送至腎臟在內的器官。
heart valve瓣膜pump(v.)抽送
This can result in sudden pain in the belly, back or side, and decreased urine production, as well as signs of high blood pressure.
這會造成腹部、背部以及腰部突然疼痛、尿量減少，以及高血壓的症狀。
result in=lead to導致decrease=reduce=lower減少降低urine(n.)尿液sign(n.)跡象
To reduce the risk of developing acute arterial occlusion, the most important thing to do if you are a smoker is to quit smoking.
要減少急性動脈梗塞的風險，最重要的就是戒菸（如果你是癮君子的話）。
smoker吸菸者quit smoking戒菸
Taking steps to prevent the hardening of the arteries may also lower your risk.
採取步驟預防動脈硬化也能降低風險。
take step採取措施、步驟prevent預防hardening硬化