有没有非常明确的确定时间和地点，在它的书面。

There is nothing very definite to determine the time and place at which it was written.

youdao

我们很难确定巧克力诞生的确切年代，但有一点是很明确的，那就是自诞生之初，巧克力就一直备受珍爱。

It's hard to pin down exactly when chocolate was born, but it's clear that it was cherished from the start.

youdao

我们很难确定巧克力诞生的确切年代，但有一点是很明确的，那就是自诞生之初，巧克力就一直备受珍爱。

It's hard to pin down16 exactly when chocolate was born, but it's clear that it was cherished from the start.

youdao

And you lay out some clear guidelines on how much each person should be giving of their income.

您也给出了明确的准则，来确定,每个人该捐赠出多少的收入。

普林斯顿公开课 - 人性课程节选

It tells you that any attempt to try to specify, to localize the position of an electron in such a system is futile.

这说明你试着任何尝试关于，使一个电子在这样一个系统中,确定其明确的位置是没有意义的。

麻省理工公开课 - 固态化学导论课程节选