Tc′(x)=s⋅Tc(x/s)T_c'(x) = s \cdot T_c(x / s)Tc′(x)=s⋅Tc(x/s)
func (opt *Option) InvalidArgumentStr(msg string) error，更多细节参见体育直播
（二）引航员或者除船员外为船舶提供服务的其他任何人；，更多细节参见体育直播
For my friend specifically, staying on the IC track, becoming a Staff engineer and switching companies would have given him ~20-30% more than the EM promotion he was offered.