obligatorily造句

• The party's instructing theory obligatorily insisted in the new century
  党在新世纪必须长期坚持的指导思想
• This hypothesis can explain not only the obligatorily indefinite interpretation of the object / theme, but also the placement of the prepositional element zai
  这个假设不但可以解释为什么处所义结果补语结构中宾语一定是不定指的，还可以解释介词“在”的位置。