现行的两种骨移植法有严重的缺陷.The two bone - grafting techniques currently available have serious limitations.头皮 全厚皮片移植法: 是利用头皮移植.All three ? scalp thick skin grafts: the use of scalp transplant....
They hunt game with spears or a curved wooden boomerang.他们用长矛或木制曲形飞镖猎取野味.Boomerang Nebula - the coolest place in the Universe?宇宙中最冷的地方?Next, I will talk about how the returning boomerang was developed.接下来, 我会谈到返回式回飞棒是怎么产...