布什并且坚信，很难在禁止复制性克隆的同时允许研究性的克隆，他说对研究性克隆好处的推测是“高度投机的”。

Bush also contended that it would be difficult to enforce a ban on reproductive cloning while allowing research cloning, and he called the presumed benefits of research cloning "highly speculative."

youdao

我推测，目前大约三分之一的进口是投机性的存货堆积。

I suspect over one third of the current imports are for speculative inventory piling.

youdao