1540s, "untimely, premature," from Latin immaturus "untimely, unripe," from assimilated form of in- "not, opposite of" (see in- (1)) + maturus (see mature (v.)). In 16c., usually in reference to early death; modern sense of "not fully developed" first recorded 1640s. In reference to mentalities or behaviors not considered age-appropriate, from 1920.
双语例句
1. Because of the immunity of the immature insects, it'simportant to spray regularly.
由于幼虫对药物有免疫力，因此必须经常喷药。
来自柯林斯例句
2. He was a young lad, very green, very immature.
他还是个毛头小子，幼稚得很，一点都不成熟。
来自柯林斯例句
3. He implied that we were emotionally immature.
他暗示我们情感上还不成熟。
来自柯林斯例句
4. His speech is immature, his vocabulary limited.
