MD: It is hard to single out one piece of the whole as being "hardest."

MD：很难将整体中的一部分挑出来作为“最困难的。”

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The National Museum of Dentistry in Baltimore, Md., has on display one of Washington's lower dentures—made from gold, ivory and lead, as well as human and animal teeth.

— 马里兰州巴尔的摩国家牙科博物馆的展品中有华盛顿的下半副假牙，用金子、象牙、铅还有人和动物的牙齿制成。

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"This win is a milestone for the agency, as we build toward being a bona-fide powerhouse in the telecommunications sector," said Tammy Sheu, group MD, Euro RSCG Beijing and North China.

“此次胜利是该机构的一个里程碑，因为我们正迈向建立一个在电信行业中的真正强大集团。”灵智精实北京和华北集团总经理Tammy Sheu说。

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Over the years WD-40 has had to fight scamsters selling shoddy material under such labels as MD- 50, SP-80, RO-90 and WB-50.

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And there are smart serious people on the Democratic side of the aisle, such as Rep. Chris Van Hollen (D-Md), who might be willing to sit down with their Republican counterparts, roll up their sleeves, and get serious about how to grow the economy.

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Martek Biosciences Corp. of Columbia, Md. uses algae to produce omega-3 fatty acids, which it sells as a supplement for food and infant formula.

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