### Chinese: 流的并不只是血，其中包含脱落的子宫内膜。
### English: It wasn't just blood that was flowing<v>, </v>it contained the shed lining of the uterus.
### Errors: There is a minor fluency/grammar error at "," within <v></v>.

### Improved English: It’s not just blood, but also endometrium that fall off.
