Fleischmann's bursa
[醫] 弗萊希曼氏水囊瘤, 舌下囊
?? 詞語組成解析
n. 囊, 黏液囊\\n[醫] 囊, 粘液囊, 傘(昆蟲)
??? 情景例句
so why don't we get right to work?
我們現在就開始工作， 好嗎？
When a dog is drowning,every one offers him drink.
待到狗溺水，眾人給水喝。
and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.
我們必須把很長的鉆桿一節節地鉆入地下，然后再從地下拉出來。鉆桿頂部安裝的發動機帶動鉆桿旋轉，它的底部裝有鉆頭。