China's Long March-5 rocket has started its seven-day journey from Tianjin Port to the Wenchang satellite launch center in south China's Hainan Province.
中国长征5号火箭从天津港出发，开始了7天的旅程，目的地为海南文昌卫星发射中心。
As the largest carrier rocket in China, Long March-5 has a diameter of five meters, wider than the conventional 3.35 meters.
Wu Yanhua, deputy head of the State Administration of Science, Technology and Industry for National Defense, said the core technologies of the carrier rocket are China designed and built.
"Long March-5 has made breakthroughs in materials, crafts, equipment and facilities in our space programs. The successful development of the carrier rocket has greatly uplifted China's capability in space flight. It has led the way in carrier rocket development by serialization, stylization and modularization."
Meanwhile, the two rocket-ferrying ships, Yuanwang-21 and Yuanwang-22, were also unveiled to the public.
相关单词：defense
defense解释：n.防御，保卫；[pl.]防务工事；辩护，答辩
defense例句：
The accused has the right to defense.被告人有权获得辩护。
The war has impacted the area with military and defense workers.战争使那个地区挤满了军队和防御工程人员。
相关单词：capability
capability解释：n.能力；才能；(pl)可发展的能力或特性等
capability例句：
She has the capability to become a very fine actress.她有潜力成为杰出演员。
Organizing a whole department is beyond his capability.组织整个部门是他能力以外的事。
