1. 911查询·英语单词
1. Endothelial function is a measure of the activity of endothelial cells that line the inside of the blood vessels.
2. The Norwegian crossed the line and immediately lay down with blood pouring from a gash to his right elbow.
3. He crossed the line and immediately lay down with blood pouring from a gash to his right elbow.
4. " The bottom line is that all urgent operations will take priority in receiving blood, " he said.