音标：['ɒ:ltә]
vt. 改变
vi. 改变
英汉词典

alter的短语、例句：

alter v 1 [I, Tn] (cause sth/sb to) become different; change in character, position, size, shape, etc （使某事物[某人]）改变; 更改, 变更, 修改, 改（性质, 位置, 大小, 形状等）
I didn´t recognize him because he had altered so much. 我没认出他来, 因为他变了许多.
She had to alter her clothes after losing weight. 她瘦了以後, 衣服也得修改了.
The plane altered course. 飞机更改了航线.
That alters things, ie makes the situation different. 那就使情况发生变化. =>Usage at change1 用法见change1. 2 [Tn] (euph 婉 esp US) remove the testicles or ovaries of (an animal) 阉割; 给（雄性动物）去势; 给（雌性动物）割去卵巢.