到了20世纪50年代，大多数学校都要求学生提供一份简短的个人陈述，说明为什么选择申请这所学校。

By the 1950s, most schools required a brief personal statement of why the student had chosen to apply to one school over another.

youdao

他承认，挑战在于如何解释数学陈述的真假与口味或者一时兴起无关。

The challenge, he admits, is to explain why it is that mathematical statements can be definitively true or false, not subject to taste or whim.

youdao

作者还对已经被大多数学者认可的双语教学的主要理论作了陈述，如：思想库理论、阈限理论和外语交际法教学理论。

It also summarizes some main theories of bilingual teaching that have been approved by most scholars, such as Think Tank Theory, the Thresholds Theory and Communicative Language teaching Theory.

youdao