They collect blood samples for analysis at a national laboratory.
他们收集血样以在一个国家实验室做化验分析。
《柯林斯英汉双解大词典》
2
The blood samples are sent to the laboratory for analysis.
血样要送往实验室进行分析。
《牛津词典》
3
JUST over 50 yearsago Robert Borkenstein, then a little-known forensic scientist, invented thebreathalyser, allowing instant analysis of alcohol levels in the blood from asample of breath.