For younger children, a dictee to test spelling is marked by pro GREssively deducting points for every error, which can crush the grade down to zero, or even into negative territory.

而对于这些小朋友们来说，拼写测试中的听写就是扣分的战斗机，分数被一个一个的错误蚕食鲸吞，这会使得他们的分数跌至零分甚至是负分。

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In addition to the ability to play back HD video and images through the HDMI terminal, users are also able to experience pro-grade video features in the Nikon D600.

ENGADGET: Nikon unveils lightweight, full-frame D600 DSLR -- hands-on and low-light samples (video)

Five of the top-15 tenants are rated investment-grade versus three years ago and was about 34% of overall revenue on a pro forma basis now coming from investment-grade.

FORBES: Move up http://i.forbesimg.com t Move down

Excellent for low-light shooting conditions, the new VIXIA HF G20 camcorder model offers an enhanced HD CMOS Pro Image Sensor and professional-grade functionality.

ENGADGET: Canon's latest VIXIA camcorders stream and share with your mobile device