提示：点击例句中的单词，就可以看到词义解释

The shaft lengthens as new bone is added at the ends .

骨干延长就像尾端增加了新骨骼一样。

This saves on long term cartridge costs and lengthens the time between cartridge replacements .

这样既可节省成本和长远装药包替换之间的时间拉长.

Research : marriage lengthens life , boosts physical and emotional health , and raises income .

调查显示：婚姻使人长寿，促进身心健康，还能增加收入。

New ultra-stretch texture lengthens and curves .

新的超拉伸纹理延长和曲线。

Ovarian transplantation restores fertility to old mice and also lengthens their lives .

卵巢移植可以使年龄大的老鼠重新获得生育力，并且可以延长他们的寿命。