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Follow this rule of thumb for stick-to-itiveness: two minutes for a two-year-old , three minutes for a three-year-old and so on up the age ladder.

你可以遵照下面关于持久性的快速估算方法：两岁的孩子两分钟，三岁的孩子三分钟，依年龄级类推。

Residents living in the old building The beautiful scenery here makes people forget themselves;though it is old building I still can feel massive history through storm and stress.

《古老的洋楼的居民》这里的美让人忘我，尽管建筑老旧，仍能在沧桑中感受历史的一份厚重。

No man also having drunk old wine straightway desireth new: for he saith, The old is better.

没有人喝了陈酒又立刻想喝新的；他总说陈的好。

Clean and check 1 slowly loosen the gland nut stuffing, packing the release of residual pressure of all components; 2 Remove all old packing, thoroughly clean axle / rod stuffing; 3 Check the shaft / bar have corrosion, dents, scratches or excessive wear; 4 Check whether there are other WATER POWER CONTROL VALVE parts burr, cracks, wear, they will reduce the packing life; 5 Check whether there is too much stuffing the gap, and the shaft / rod eccentric degree; 6 the replacement of defective parts larger; 7 Check the old packing, as BALANCING VALVES the basis of failure analysis to find the reasons for early failure of packing.

缓慢松开填料函的压盖螺母，释放盘根组件内所有的残余压力； 2）移去所有旧的盘根，彻底清洁轴/杆的填料函； 3）检查轴/杆是否有腐蚀、凹痕、划伤或过度磨损； 4）检查其他零件是否有毛刺、裂纹、磨损，它们会减少盘根的寿命； 5）检查填料函是否有过大的间隙，以及轴/杆的偏心程度； 6）更换有较大缺陷的零部件； 7）检查旧盘根，作为失效分析的依据，球阀以找到盘根早期失效的原因。

Both burials, a 45- to 55-year-old female and a 13- to 14-year-old subadult, were buried in a manner similar to "JB" and had the initials "IB-45" and "NB-13" spelled, respectively, in tacks on the coffin lid.

这两具遗骨，一个是45到55岁之间的女性，一个是13到14岁的未成年人。她们都以类似于"JB"的方式被埋葬，一个是"IB －45"，一个是"NB －12"，都用大头钉钉在棺材盖上。

The old asphalt pavement is disposed by applying cold recycle technology,then it is can be used as base or subbase course,which can make the old materials of highway be utilized fully,reduce the excess consumption of resources and save 20%～30% cost,reduce the environmental pollution caused by scrap piling and transportation as well as reduce the dust and exhaust emission during construction process.

采用冷再生技术对旧的沥青路面进行处理，将其作为公路的基层或底基层使用，可使公路旧料全部得到利用，减少资源的过度消耗，节约成本20%～30%，还可减少因废料堆放和运输引起的环境污染，减少施工过程中的粉尘和废气排放。

The FTIR analysis indicated that there was no or very little suberin in endodermis radial wall of cotyledon compared with primary and two-year-old leaves. Furthermore, the content of suberin in endodermis of the primary leaves was lower than that of two-year-old leaves.

根据FTIR的检测结果显示：子叶内皮层细胞径向壁不含木栓质或极少，2 a生针叶内皮层细胞径向壁木栓质含量高于初生叶。

Leaves simple, alternate on long, 1-year-old branchlets or single and subterminal on short, many-year-old branchlets, marked by crowded concentric scars from petiole bases and bud scales from former years; leaf blade palmately veined.

单叶，在1年生枝条上互生，在短的多年生枝条上单生或近顶生，叶柄和往年的芽鳞基部有同心的疤痕叶片具掌状脉。

In it was an old woman with a lip full of snuff and a weather beaten face under a drab sunbonnet , driving a dawdling old mule .

正当她准备步行穿过城镇到北方佬营地去时，一辆破旧的货车来了，车上有个老太婆，嘴唇上满是鼻烟潭，那张久经风霜的脸躲在一顶皱巴巴的太阳帽底下，她赶着一匹慢悠悠的老骡子，她是朝市政厅方向去的。

Just as she was preparing to start walking the long way across town to the Yankee encampment, a battered wagon appeared. In it was an old woman with a lip full of snuff and a weather-beaten face under a drab sunbonnet , driving a dawdling old mule.

正当她准备步行穿过城镇到北方佬营地去时，一辆破旧的货车来了，车上有个老太婆，嘴唇上满是鼻烟潭，那张久经风霜的脸躲在一顶皱巴巴的太阳帽底下，她赶着一匹慢悠悠的老骡子，她是朝市政厅方向去的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。