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1·One of his upper front teeth was loose.

他上排有一颗门牙有些松动。

2·To have one upper front tooth pulled out?

被拔掉一个上颚前门牙？

3·The upper front part of a saddle; a saddlebow.

前鞍桥马鞍前面的上部分；

4·When Lizzie smiled, Paige suddenly noticed her upper front teeth were pitted with holes.

当她笑时，Paige突然注意到她上门牙全是洞。

5·For example, how much would you have to be paid to have one upper front tooth pulled out?

举例来说，你愿意付多少钱来拔掉你的一颗上门牙？

6·Upper front teeth that are paper thin, with the enamel almost completely worn away, and teeth that hurt.

上端前齿过薄，牙釉质几乎消失，牙齿也有损伤。

7·The upper front leg near the tibia have 2-3 teams out of the anterior tibial artery issued from the branch.

小腿上部胫骨前缘旁穿出的还有2—3支自胫前动脉发出的分支。

8·Remember, while your thighs are drawing strongly back, resist forward with your upper calves and upper front shins to keep your legs straight.

记住，但你的大腿强有力地往回拉时，保持小腿上部和前侧胫骨的上部向前来保持你腿的正直。

9·In this study, students came into the laboratory and were asked to give a public speech in front of upper-year students.

在这项研究中，学生们进入实验室，并被要求在高年级学生面前进行公开演讲。

10·Students had to complete a difficult mental math task in front of the same upper-year students.

学生们必须在同一批高年级学生面前完成一项艰巨的心算任务。