显: Ⅰ形容词1.(明显) apparent; obvious; noticeable; evident 短语和例子成效不显。 the result is not so marked. 药的效果还不显。 the effect of the medicine is not yet noticeable.2.(有名声有权势的) illustrious and influential
长度: length; longitude; size; extent; footage 短语和例子各种长度 assorted lengths; (合乎)理想的长度 desired size; 它的长度合适。 it is of convenient length