There are about 1.5 million islets is the pancreas.胰腺里大约有一百五十万个胰岛.In the Philippines alone there are more than 7,000 islands and islets.仅菲律宾群岛就包括大小岛屿七千多个.The river Till strained among some score of willow - covered, mars...
Stratospheric airship platform includes soft, rigid and semirigid airships.平流层飞艇平台可分为软式飞艇 、 硬式飞艇和半硬式飞艇.The frame of an airship is made of light but strong metal.飞船的框架是用轻而坚固的金属制成的.The airship circled at sea.飞艇在海面打圈子.If ne...