certainly的形容词用英语怎么说

certain adj. 某一；必然的；确信；无疑的；有把握的。

例句：

He vouchsafed to me certain family secrets.

他让我知道了某些家庭秘密。

The offer is subject to certain conditions.

此项优惠受制于某些条件。

扩展资料

Some students are exempt from certain exams.

有的学生可免除某些考试。

Solids turn to liquids at certain temperatures.

固体在一定温度下转变成液体。

People can react badly to certain food additives.

人们对某些食品添加剂会严重过敏。

The symptoms may be exacerbated by certain drugs.

这些症状可能会因为某些药物而加重。