B. a column bar (6) is firmly positioned with a lower joint-body of an upper buckling and pressing mechanism (1) and is propped by a top-suspending spring (12);

上述的立柱杆（6）与上部扣压机构（1）的下部联体牢固定位，并受到顶吊弹簧（12）的顶托；

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Women's paychecks are benefiting and the shift in fathers' roles is perceived as playing a part in lower divorce rates and increasing joint custody of children.

女性的收入会从中受益，而且人们认为父亲地位的提升在降低离婚率和提高孩子的共同抚养率方面发挥了作用。

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Barefoot walking ensures proper alignment of the knee joint, hip joint and lower back.

光脚走路能够保证我们的膝关节、髋关节和下背部得到有效的调节。

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Trawling around the shops can cause headaches and joint pain, while gardening and DIY can lead to joint and lower back aches.

BBC: Bank Holiday health risk

The married couple also gets some relief on both federal and Social Security taxes, thanks to the slightly lower tax rates associated with joint filing.

FORBES: The Cost Of Being Married Versus Being Single

The reason why I will not is that it would be directly inimical to our joint efforts to lower the temperature on transatlantic trade disputes.

ECONOMIST: Letters