abdominal muscle
alternating current
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B.C.
Bottom fuze (abbreviation of base detonating)
laser record
3+2+ 1=6.
A starts with ab, ac and ad.
Bc and bd with the beginning of B.
Cd no.1 middle school with the beginning of c.
3+2+ 1=6
This formula is used for this kind of problem.
Brief Introduction of Chang 'an Town in Dongguan City
Chang 'an Town is located at the southern tip of Dongguan City, Guangdong Province, b