我们所有的飞机都有适航证书。All our aircraft have certificates of airworthiness.适航审定主要包括型号合格审定和生产许可审定及其他工作.Airworthiness certification includes Type Certification and Production Certification , and other related work.经审查合格的,发给出口适航证书.A...
Nowadays, only the two big houses remain roofed.现在，只有那两座大房子还有屋顶。They roofed the house with slates.他们用石板瓦做屋顶.The building is roofed entirely with translucent corrugated plastic.这座建筑完全用半透明瓦楞塑料封顶。...
Foliaceous back provides fluff , vein is thicker , stipule is damask.叶背具柔毛, 叶脉较粗,托叶淡红色.Shirley flicked a speck of fluff from the sleeve of her black suit...雪莉弹掉了黑色套装袖子上的一点小绒毛。Woolen blankets often have fluff on them.毛毯上经...