In many children with A. D. H. D., these drugs can help the circuits function more normally.
对于许多患有注意缺陷多动症的儿童来说，这类药物的确可以使他们的神经回路更加正常地工作。
Perhaps eager to make clear that A. d. H. d. is far more than a metaphor for the distractions of modern life, scientists love to point out examples that date to well before the term was invented.
也许是急于阐明注意缺陷多动症不仅仅是现代生活中的分心问题的不同说法，科学家喜欢引用那些早在注意缺陷多动症这一术语被发明之前就已经被关注的案例。
A method of H-D two-line analysis is given and isochromate equation of pseudo-color code of optical image is obtained.
本文提出了H-D双线的分析方法，得到了光学图象假彩色编码中的等色线方程。
It is not enough to be industrious, so are the ants. What are you industrious about? — H. D. Thoreau.
光勤劳是不够的，蚂蚁也是勤劳的。要看你为什么而勤劳。——梭罗。
It is not enough to be industrious, so are the ants. What are you industrious about (H. D. Thoreau)?
光勤劳是不够的，蚂蚁也是勤劳的。要看你为什么而勤劳。(梭罗)？
Numerical simulation results show that the optimal preform H/D dimension thus obtained can greatly reduce hammering times and die wear.
数值模拟结果表明获得的预成形H/D最佳尺寸可明显减少模锻锤击次数和模具磨损。
There appears some flexibility at the top of tower with high ratio of height to diameter (H/D), caused by wind load.
高径比（H/D）较大的塔在风载荷的作用下，在塔顶处会引起一定的静挠度。
All good things are cheap, all bad things are very dear. — H. D. Thoreau.
一切好的东西都是便宜的，所有坏的东西都是非常贵的。英语的名言。
All good things are cheap, all bad things are very dear. — H. D. Thoreau.
一切好的东西都是便宜的，所有坏的东西都是非常贵的。英语的名言。
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