这些大型货船每天运送成千上万吨的货物。

These large cargo ___vessels transport thousands of tons of goods every day.

医生在显微镜下检查了病人手臂上的微小血管。

The doctor examined the tiny ___vessels in the patient's arm under a microscope.

船员们用木制容器储存淡水。

The sailors stored fresh water in wooden ___vessels.