Not only are they snakes, but they can "fly" -- flinging themselves off their perches, flattening their bodies, and gliding from tree to tree or to the ground.
The projections suggest a flatteningoff and then a slight decline in the foreseeable future.
在可预见的未来，人口预期是维持平缓水平然后缓慢下降。
3
The skull is broad and moderately rounded between the ears, gradually narrowing and flattening on top as it approaches the eyes, rounding off to cheeks that are moderately flat.