This method allows for effective control of nuisance algae while leaving solar ponds as one of the cleanest technologies providing energy for human use.
Jacob Burckhardt's view that Renaissance European women "stood on a footing of perfect equality" with Renaissance men has been repeatedly cited by feminist scholars as a prelude to their presentation of rich historical evidence of women's inequality.
既然有as存在对比,那对比项有相同,as前部分明显主语是Halley's comet(哈雷彗星),那as后部分的主语就不能是星体以外的东西,那么 以its return为主语的全部排除,只有C its return是在介词短语里的,因为省略了相同部分
Halley's comet cause such a worldwide sensation in no other historical sighting as (Halley's comet cause) in its return of 1910–1911.
请问cannot achieve 和 no need 的具体差别怎么理解?