背部的

It is common for a mountain bike today to use nine gears in the back and three sprockets of different sizes in the front for gear ration production.

这是常见的山地车今天使用9齿轮的背部和三个大小不同的链轮在前面的齿轮口粮生产。

Common warning signs of middle back pain include having a tender spot in the chest that switches on and off, needing to struggle with your breath when breathing normally, having chest pains while taking a deep breath, and also feeling pain in the chest when sneezing or coughing.

常见的警告标志，中背部疼痛，包括有一个投标现场在胸部开关和关闭，需要的斗争，与您的呼气时，呼吸正常，胸部疼痛，同时考虑深呼吸，也感觉疼痛的胸部时，打喷嚏或咳嗽。

In addition to his foot injury, Ian recently strained his back while weightlifting and is now taking muscle relaxants.

除了他的脚伤，伊恩最近紧张的他的背部，而举重和正在采取的肌肉松弛剂。

Kramer recommends stretching for a few days prior to starting work in the garden, using well-oiled tools with spring-action, self-opening features and taking frequent breaks to decrease stress on your back, knees and hips.

克莱姆建议，在进行花园劳动的前几天就应适当舒展身体；对那些带有弹性作用功能和自开功能的工具，要上好润滑油后再使用；在劳动中还要经常的休息，以减少背部、膝盖和臀部受到的压力。

Kramer recommends stretching for a few days prior to startingwork in the garden, using well-oiled tools with spring-action,self-opening features and taking frequent breaks to decrease stresson your back, knees and hips.

克莱姆建议，在进行花园劳动的前几天就应适当舒展身体；对那些带有弹性作用功能和自开功能的工具，要上好润滑油后再使用；在劳动中还要经常的休息，以减少背部、膝盖和臀部受到的压力。

Researchers are using a new form of magnetic resonance imaging to show that sitting in an upright position places unnecessary strain on your back, leading to potentially chronic pain problems if you spend long hours sitting.

科研人员正在利用一种新的磁共振成像显示坐在直立位置名额不必要的压力，你的背部，导致潜在的慢性疼痛问题，如果你长时间坐。

The metal-head woods, the featherweight clubs, and the hollow back irons have expanded what is often referred to as the "sweet spot" on the club.

镶金属的木质杆头，轻如羽毛的杆子以及背部空心的杆身，都扩大了所谓球杆的「甜蜜部位」。

You will build cardiovascular fitness, tone your legs, abs, buttocks, and back, have more energy, increase your metabolism, and just feel, look, and be fit.

您将建立心血管健康，您的腿基调，吸收，臀部，和背部，有更多的能源，增加您的新陈代谢，和公正的感觉，期待，并符合。

There are so many old wives tales and silly assumptions that many people don't truly understand what the problem with their back is became of the nonsense they hear about back pain and its causes.

有这麼多岁的妻子的故事，和愚蠢的假设，很多人不真正了解什麼问题与他们回是成为的胡言乱语，他们听到背部疼痛及其成因。

Lift your arms up over your head and reach as far as you'll be able to go to free up the stress on your back muscles.

电梯的双臂在你的头上，并达到尽可能您可以去自由的压力你的背部肌肉。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。