不常的

But as people says, if three-leg-donkey is hard to find, two-leg-chick is a dime a dozen.

但人常说，虽然三条腿的驴子不好找，但两条腿的马子遍地都是。

We tumble most of the time for our advantage but not for our disadvantage,Because disadvantage always served as a reminder to us,while advantage deprive us of the right to choose and to abnegate.

许多时候，我们不是跌倒在自己的缺陷上，而是跌倒在自己的优势上，因为缺陷常能给我们以提醒，而优势却常常使我们忘了去选择和放弃。

Background: Although symptoms of patients with achalasia are often related to psycho-mental factors, it remains unclear whether psycho-mental factors are involved in the pathogenesis of achalasia.

背景：贲门失弛缓症患者的症状常受情绪影响，但情绪因素在贲门失弛缓症发病中的作用尚不清楚。

Well, well… I've always said,'alchemy is no substitute for experience'.

好吧，好吧……那就是我常说的：'炼金术不是经验的替代品'。

And now is not Boaz our relative, with whose young women you have been?

3：2 你与波阿斯的使女常在一处，波阿斯不是我们相识的人麼？

Is not Boaz, with whose servant girls you have been, a kinsman of ours?

你与波阿斯的使女常在一处、波阿斯不是我们的亲族麼。

Taking a single disk rotor with hinged ends as research object, to a different forward and backward whirling type the effect and its innate laws of the magnitude and acting direction of the constant torque on the stability are proposed by means of the eigenvalue theory of real linear systems.

以两端简支的单圆盘转子为对象，利用非线性振动理论的多尺度方法，研究了简谐扭矩作用下具有时变参数激励系统的近似解，指出系统出现不稳定组合式共振的可能性并给出了定常扭矩、简谐扭矩、外阻尼对不稳定区域边界条件的影响。

The technical characteristic of a pendulum drill assembly is to lose "penetration rate"in order to get"dropping angle", but sometimes a pendulum drill assembly can't meet the need of drop—off hole angle, which results in longer completion well cycle and more drilling cost.

防斜打直是常遇到的钻井技术问题，防斜的钻具组合是满眼钻具，纠斜的钻具组合是钟摆钻具，当满眼钻具满足不了井斜控制的要求，就必须强迫起钻换钟摆钻具，而钟摆钻具的技术特点是损&快&保&直&，有时还达不到纠斜要求，导致较长的建井周期和较高的钻井成本。

The exchange that carried on between family and clan. But further research finds that a lot of exchange systems of transition type exist between these two kinds of extremes, they different from North America and Melanesia potlach excessively extravagant to unrealistically compare already, different from another gentle present exchange competition , we often in money given to children as a lunar New year gift , banquet of giving , from wedding to fighting for size ,etc.

然而进一步的研究却发现在这两种极端之间存在着许多过渡型的交换体系，它们既不同于北美和美拉尼西亚过度铺张攀比的夸富宴，也不同于另一类温和的礼物交换竞争，而是如我们常在给压岁钱、宴会、婚礼直至简单宴请中的暗中争长短等，像德国人形容的&回报自己&，这样的温和中间交换形式在古代印欧地区尤为普遍，特别是萨斯。

Grass of willow leaf horsewhip because plant is lofty, plant the question on potted management is very much, lofty cauline wind is blown or collide to fold caustic easily artificially for example, after blossomming, carry wait not easily, before not quite the farmer is willing to be planted commodity is trafficced, in recent years the farm be current because of sightseeing condition, this kind grows the grass of willow leaf horsewhip that exuberant amount jumps over the United States more more just is able to come forward, additional also outside constant somebody thinks grass of Liu Xie horsewhip by accident is edible flavor plant, that is the concern that because of grass of as citric as flavor plant horsewhip the name approachs very much, should reminding Liu Xie horsewhip is careless here is not flavor plant without edible value, be to view and admire crop purely!

柳叶马鞭草由于植株高大，种成盆栽治理上问题很多，例如高大的茎风吹或人为碰撞易折损。开花后运送不易等，以往不太有农民愿意种成商品贩卖，近年因为观光型态的农场盛行，这种生长旺盛数量越多越美的柳叶马鞭草才得以出头，另也外常有人将柳叶马鞭草误以为是可食用的香料植物，那是因为与香料植物柠檬马鞭草名称很接近的关系，在此要提醒柳叶马鞭草不是香料植物没有食用价值，纯粹是观赏作物喔！

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。