Hel
英 美
He often Hel me with maths when I have difficulty in it.
当我学数学有困难时,他经常帮助我。
Hel TD is a cornerstone of the Army's high-energy laser program.
HEL TD系统是美国陆军高能激光计划的基础。
The Hel TD demonstration program will support the transition to a full-fledged Army acquisition program.
HEL TD演示项目将支持美陆军全面采购计划的转型。
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