恐龙

[古生物学] (古代爬行动物 ,繁盛于中生代) dinosaur ◇恐龙蛋 dinosaurian egg  detail>>

真相

face; naked truth; truth; the actual state of affairs; the real situation  短语和例子  &nb...  detail>>

哈龙灭火器

halon extinguisher  detail>>

海龙灭火系统

halon fire extinguishing system halon gas flooding system halongasfloodingsystem  detail>>