It's my conviction (ie I firmly believe) that complacency is at the root of our troubles.
我深信自满情绪是我们各种问题的根源。
Ideas of inertia and complacency are both wrong.
无所作为和骄傲自满的论点都是错误的。
complacency详细解释
com.pla.cen.cy n.(名词)A feeling of contentment or self-satisfaction, especially when coupled with an unawareness of danger or trouble.自满:一种满足或自满,尤指未意识到危险或麻烦时An instance of contented self-satisfaction.自鸣得意:一种得意的自我满足