不过，他也说，就好像负重训练可以锻炼肌肉一样，即使是意志力薄弱的人也能增强之。
But, Pychyl says, as with weight training, even self-control weaklings can strengthen their willpower.
我们做了一些简单的可用性增强，使之更易于使用。
Several simple usability enhancements were done to make it easier to use.
加利福尼亚大学的科学家日前宣称，一种新型药物“青春之泉”已被研制出来，该药物能够增强人体免疫能力，进而延长人类生命。
A new drug called "fountain of youth pill" has been discovered, according to the scientists from the University of California.This drug makes people live longer by boosting their immune system.
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