他是一位顺性别的男性，从未质疑过自己的性别认同。

He is a ___cis man who has never questioned his gender identity.

大多数顺性别女性从出生起就被社会认定为女孩。

Most ___cis women are socially recognized as girls from birth.

这种化合物的顺式结构比反式更稳定。

The ___cis form of this compound is more stable than the trans form.