2 sentences for 性 (xìng — sexuality)

1. 嫉妒从来都不性感。

   jí​dù cóng​lái dōu bù xìng​gǎn.

   Jealousy is never sexy.

   Source: OpenSubtitles

2. 中学的性教育课涉及生殖生物学。

   zhōng​xué de xìng​jiào​yù kè shè​jí shēng​zhí shēng​wù​xué.

   Secondary school sex education lessons cover the biology of reproduction.

   Source: United Nations