As you stand, maintain the natural curve in your lower back and keep your core muscles tight. Use your leg muscles - not your back - to lift the object.

在你站起来的时候，继续保持腰背部的自然曲线，保持收紧你的核心肌肉。用你的腿部肌肉——不是背部——去抬起物品。

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As did other paradigms when they were new (e.g., object-oriented software development), this one will take time to be adopted widely because it involves a learning curve.

正如其它范例当它们刚刚出现时(例如面相对象的软件开发)，由于它所包含的学习曲线，它需要经历一段时间以被广泛采用。

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This thesis regards edge curve of a real gear wheel as the research object.

本文以一个实际的齿轮的边缘曲线为研究对象。

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It says that if in this space any closed-curve object, such as a rubber band, can be shrunk to a point, then the space is topologically equivalent to a sphere.

FORBES: Plugging A Math Gap