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单词	ostium
释义	os·ti·um (ŏstē-əm) n. pl. os·ti·a (-tē-ə) 1. A small opening or orifice, as in a body organ or passage. 2. Any of the small openings or pores in a sponge, through which water is drawn in. [Latin ōstium, door, opening, from ōs, mouth; see ōs- in the Appendix of Indo-European roots.]
随便看	on (one's) conscience on one's conscience on (one's) deathbed on one's deathbed on (one's) feet on one's feet on (one's) guard on one's guard on one's hands on (one's) head on one's head on (one's) honor on one's honor on (one's) last legs on one's last legs on (one's) mettle on one's mettle on (one's) own on one's own on (one's) own account on one's own account on (one's) own ground on one's own ground on (one's) own hook on one's own hook

英语词典包含135693条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。