單孔
拼音：dān kǒng英文解釋：
【醫】 foramina singulare例句：
- 無胎盤的無胎盤的，如有袋目哺乳動物和單孔目動物Having no placenta, as marsupials and monotremes.
- 圓明園罹劫並經百年風雨後，僅殘存這座單孔石拱橋。But only the remnants of this single-arch stone bridge remain to this day.
- 滑坡工程中單孔複合錨索現場試驗研究TEST STUDY OF THE SINGLE BORE MULTIPLE ANCHOR CABLE IN LANDSLIDE PROJECT