lanshi

我也想请教这题~
D选项OG给出的解释是：if the accelerators can be used for multiple experiments, then it is reasonable to expect more articles related to them, not fewer.
从这个解释来看，貌似不是unrelated，这个D选项就等于是说： the low nubmer of articles was NOT due to the decline in availability of particle accelerators ,这我认为应该是weaken的一种
请指教啊~