Sent_en: 2zh The U.S. space agency NASA called off the launch of Space shuttle Discovery today after a problem with a fuel sensor in the external tank used to detect fuel exhaustion.
Sent_yy: 美国宇航局今天取消了发现号航天飞机的发射，原因是用于探测燃料耗尽的外部燃料箱的燃料传感器出现问题。