这束毛线解不开.This skein of wool won't disentangle.绳子解不开了，只能剪断。The rope could not be disentangled and had to be cut.这个结太结实了,我解不开.This knot is so tight I cannot undo it....
Bone marrow transplantation began 20 years ago.骨髓移植开始于20年前。Transplantation is not always successful in the matter of flowers or maidens.花儿移栽往往并不成功,少女们换了环境也是如此.Results: All animals survived after transplantation and tumor...