let blood

基本解释

Doctors used to let blood from people to lessen a fever.
过去医生以放血来减轻热度。
Wear roomy clothing, especially at the wrists and ankles, to let blood flow to the extremities.
穿着宽松的衣服，尤其在腕部和踝部，让血液流到末端。
Let blood from the patient.
给病人放血。
chinafanyi.com

"Well,I will not let you put yourself or this bar in danger.I won't." "True Blood" has completed its second season on the cable channel HBO.
This is in the middle of the page: Let me assure you that no one but a Catholic could have written Wise Blood even though it is a book about a kind of Protestant saint.
在这页的中间：,“你要确信,只有一个才天主教徒能写出《慧血》,尽管这本书是关于新教徒。
耶鲁公开课 - 1945年后的美国小说课程节选
Being so caught up, So mastered by the brute blood of the air, Did she put on his knowledge with his power Before the indifferent beak could let her drop?
就这样被征服，这样被天空中野性的血液欺凌，她是否借他之力获得了知识,在那一意孤行的嘴放她下来之前？
耶鲁公开课 - 现代诗歌课程节选

All they needed was to open up the tubes and let the blood start flowing, right?
FORBES: The Guys Who Trade Your Blood For Profit