例句與造句

1. And, they say, women with acne, psoriasis, hives and eczema report symptoms that worsen in the days immediately preceding menstruation.
2. In fact, however, fertilization usually occurs within a day of ovulation, which, in turn, occurs on average 14.6 days after the beginning of the preceding menstruation ( LMP ).
3. But Dr . Marcia Herman-Giddens of the University of North Carolina sparked concern with her 1997 landmark study of 17, 000 girls that found outward signs of puberty that precede menstruation _ budding breasts and pubic hair _ were hitting younger.
4. It's difficult to find preceded menstruation in a sentence. 用preceded menstruation造句挺難的