Lacking strength or energy; spiritless; weak.
无力的无力或无精力；无精打彩的；虚弱。
The influences of lacking strength of materials and screw thread are treated in this paper, as well as corrosion questions on complicated project situation.
探讨了材料强度及螺纹强度钻柱失效的影响、复杂地质条件下套管及钻柱的腐蚀疲劳寿命、以及磨损对套管钻柱失效的影响；
Many of us are lacking in the strength we so covet.
我们中间有许多人缺乏这种安静的力量。
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