flap down

1. In the lightest breeze he could curve his feathers to lift himself without a single flap of wing from sand to cloud and down again.
   在小得不能再小的风中，他没展动一下翅膀，光弯曲着羽毛，竟能从沙滩上起飞在冲云霄，再降落下来。
2. He licked the flap of the envelope and stuck it down.
   他舔了舔信封口，并把它封上。
3. I had a great high shapeless cap, made of a goat's skin, with a flap hanging down behind.
   我头上戴着一顶山羊皮做的、不成样子的、又高又大的便帽，脑后垂着一块长长的帽缘。
4. Congenital Severe Blepharoptosis Correction with Frontalis Muscular Fasciae Flap Draw Down Suspension Through Upper Eyelid Fold Incision
   重睑切口额肌筋膜瓣拉下式悬吊矫治先天性重度上睑下垂
5. Conclusion The frontalis muscular fasciae flap draw down suspension through upper eyelid fold incision can be used to treat severe blepharoptosis congenital and achieve good effects.
   结论重睑切口额肌筋膜瓣拉下式悬吊术矫治先天性重度上睑下垂，效果确切可靠。
6. Describes a J shaped stack developed to meet the requirement of smoke emission standard of oil fired boilers, which consists of a slope tee, a straight pipe, an expansion joint, an explosion flap, a rain drain pipe and a down pipe.
   为满足燃油锅炉的烟气排放要求，设计了J型烟囱，它由斜三通、直管、膨胀节、防爆门、雨漏、落水管等组成；

verb

1. throw violently
   1. He slammed the book on the table

   Synonym:    slam