您要查找的是不是：
- twin lobe bioprosthesis valve 双叶人造生物瓣膜
- polypropylene frame for bioprosthesis valve 组织瓣膜聚丙烯支架
- frame for bioprosthesis valve, polypropylene 组织瓣膜聚丙烯支架
- The mother with twin babies are always on the run. 这个有双胞胎婴儿的妈妈总是忙忙碌碌的。
- The twin brothers are far apart in character. 那两个孪生兄弟的性格相差很远。
- You must be muddling me up with my twin brother. 你一定是把我看成我的孪生兄弟了。
- Nothing can set the twin brothers at variance. 没有什么事能使这对双胞胎兄弟吵起来。
- How much do you know about the works of Mark Twin. 马克。吐温写的作品你知道多少？
- How much do you know about the works of Mark Twin? 马克。吐温写的作品你知道多少？
- Keywords Cardiac valve replacement Stentless bioprosthesis valve Transesophageal echocardiography （TEE）; 心脏瓣膜置换;无支架生物瓣;经食管超声心动图;
- You're always mixing me up with my twin sister! 你老是把我和我的孪生妹妹弄混了！
- I took a shot of the twin sisters. 我给那对孪生姊妹拍了一张照片。
- Have you turned off the water valve? 你关掉水阀了吗？
- He is the younger twin of the two. 他是这对双胞胎中的弟弟。
- Can you tell the twin sisters apart? 你分得清这两个孪生姐妹吗?
- Oxford's twin town in France is Leon. 牛津在法国的友好城市是里昂。
- My twin brother is my shadow every minute. 我的孪生兄弟与我形影不离。
- I always confounded him with his twin brother. 我总分不清他和他的孪生兄弟。
- We need an eye bolt to fit this valve. 我们需要一个有眼螺栓来固定这个阀门。
- Mary and her twin sister are the splitting image of each other. 玛丽和她的孪生姐妹两人简直是一模一样。
