Work by Tina Malti, a psychology professor at the University of Toronto, suggests that guilt may compensate for an emotional deficiency.

多伦多大学的心理学教授蒂娜·马尔蒂的研究表明，内疚可以弥补情感上的缺失。

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The question is to what extent color deficiency poses a problem for the usability of a product.

问题是，色觉障碍的程度为产品的可用性带来了巨大的挑战。

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A radiation deficiency is seen in a variety of species including rats and mice: the evidence for a radiation deficiency in humans is compelling.

许多物种都存在辐射不足问题，包括各种鼠类：人类同样缺乏辐射的证据也非常令人信服。

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Vitamin D supplements are recommended for all people at risk of a deficiency, including all pregnant and breastfeeding women, children under five years old, people aged over 65, and people at risk of not getting enough exposure to sunlight.

BBC: Experts review vitamin D advice

The IRS issued Bulas a notice of deficiency, denying the deductions for the wages paid to his daughters and the business use of his residence.

FORBES: Tax Court Rules Bathroom Deduction All Wet

If the expatriate does not file a U.S. income tax return for the year of the sale, the IRS will issue a notice of deficiency to him at his last known address for income tax on the gross sale proceeds.

FORBES: Oh Canada! Our Home and Adopted Land