insignificant
adj
having little or no value, use, meaning or importance 无价值的; 无用的; 无意义的; 不重要的; 无足轻重的
The rate has fallen by an insignificant (ie too small to be important) amount. 比率虽有下降, 但微不足道.
an insignificant-looking little man who turned out to be the managing director 一个其貌不扬的男人, 却原来是总经理.