加固

加固	jiā gù	to reinforce (a structure) / to strengthen
加	Jiā	Canada (abbr. for 加拿大) / surname Jia
加	jiā	to add / (math.) plus / to increase; to augment / (used before a disyllabic verb, often after an adverb like 不, 大, 稍 etc, to indicate that the action applies to sth previously mentioned, as in 稍加改良 "make some minor improvements to (it)")
固	gù	hard / strong / solid / sure / assuredly / undoubtedly / of course / indeed / admittedly