您要查找的是不是：
- middle hemorrhoidal vein 痔中静脉
- middle hemorrhoidal veins 直肠中静脉
- I'm sick of being piggy in the middle all the time. 我腻烦了总是夹在争吵双方的中间。
- He planted roses in the middle of the garden. 他在花园中间种上玫瑰。
- hemorrhoidal vein, superior 直肠上静脉
- He admires the chivalry of knights in Middle Ages. 他很佩服中世纪武士的侠义精神。
- It has its roots deep in the Middle Ages. 它起源于遥远的中世纪。
- varicosis of hemorrhoidal vein 痔静脉曲张
- My wheel twisted off in the middle of the car race. 我的车轮子在汽车比赛中途脱掉了。
- We have studied botany in our middle school. 我们在中学的时候就学过植物学。
- hemorrhoidal vein 痔静脉
- There are 300 students or so in this middle school. 这所中学大约有300个学生。
- He was appointed the rector of the middle school. 他被任命为那所中学的校长。
- superior hemorrhoidal vein 痔上静脉
- She has dropped out in the middle of the race. 她中途退出比赛。
- We've learned algebra in middle school. 我在中学就学过代数学。
- He broke off in the middle of a sentence. 他一句话只说了一半就停住了。
- He is standing in the middle of the classroom. 他正站在教室中间。
- He is studying at a junior middle school. 他正在上初中。
- We had studied physiology in middle school. 我在中学就已经学过生理学。
