详细解释:n. * 托, * 帽
【医】 * 托, * 环; * 栓
词型变化：
名词复数:pessaries英语解释：
名词 pessary:
a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic; it is filled with spermicide and fitted over the uterine cervix同义词：diaphragm, contraceptive diaphragm