时差N小时 如何判断自己是不是双关节?(下)

Connective tissues also form the tendons that join the bones to the muscles.

结缔组织同样也组成了连接肌肉与骨头的肌腱。

Ligaments and tendons usually restrict the movement of the joint¹, but in some people, these normally restrictive tissues can be quite flexible and allow the extra movement we call double-jointed.

韧带与肌腱通常会限制关节的活动，但是对于一些人来说，这些受限的结缔组织非常灵活，可以做出更大范围的活动，也就是我们所称的“双关节”。

Practice can increase a joint's natural flexibility² just the way stretching can increase your muscles' flexibility.

关节的自然柔韧性可以通过锻炼加以改善，就像伸展运动能够加强肌肉的柔韧性一样。

While flexible joints³ are very useful to contortionists, some joints can become so loose that they are unstable⁴.

灵活的关节对柔术演员来说至关重要，但他们的一些关节可能会变得很不稳固。

This allows the bones of the joint to slip out of their sockets⁵ and can be very damaging.

这很容易导致关节脱臼，对身体造成很大的伤害。

Strengthening the muscles around the joint can stabilize⁶ it and still allow you to show off your trick joint at parties.

加强关节周围肌肉的锻炼能够使关节稳固，并且你依然可以在各式派对上一展“灵活”的风采。

1 joint   

adj.联合的，共同的；n.关节，接合处；v.连接，贴合

参考例句：

• I had a bad fall,which put my shoulder out of joint.我重重地摔了一跤，肩膀脫臼了。
• We wrote a letter in joint names.我们联名写了封信。

2 flexibility   

n.柔韧性，弹性，（光的）折射性，灵活性

参考例句：

• Her great strength lies in her flexibility.她的优势在于她灵活变通。
• The flexibility of a man's muscles will lessen as he becomes old.人老了肌肉的柔韧性将降低。

3 joints   

接头( joint的名词复数 )； 关节； 公共场所（尤指价格低廉的饮食和娱乐场所） （非正式）； 一块烤肉 （英式英语）

参考例句：

• Expansion joints of various kinds are fitted on gas mains. 各种各样的伸缩接头被安装在煤气的总管道上了。
• Expansion joints of various kinds are fitted on steam pipes. 各种各样的伸缩接头被安装在蒸气管道上了。

4 unstable   

adj.不稳定的，易变的

参考例句：

• This bookcase is too unstable to hold so many books.这书橱很不结实，装不了这么多书。
• The patient's condition was unstable.那患者的病情不稳定。

5 sockets   

n.套接字，使应用程序能够读写与收发通讯协定(protocol)与资料的程序( Socket的名词复数 )；孔( socket的名词复数 )；（电器上的）插口；托座；凹穴

参考例句：

• All new PCs now have USB sockets. 新的个人计算机现在都有通用串行总线插孔。
• Make sure the sockets in your house are fingerproof. 确保你房中的插座是防触电的。 来自超越目标英语 第4册

6 stabilize   

vt.（使）稳定，使稳固，使稳定平衡；vi.稳定

参考例句：

• They are eager to stabilize currencies.他们急于稳定货币。
• His blood pressure tended to stabilize.他的血压趋向稳定。