v show to be reasonable or provide adequate ground for
v show to be right by providing justification or proof
v defend, explain, clear away, or make excuses for by reasoning
v let off the hook
v adjust the spaces between words
v. 证明…有理( justify的第三人称单数 ); 为…辩护; 对…作出解释; 为…辩解（或辩护）