v reduce the level or intensity or size or scope of
v lessen in force or effect
词态变化
原型:weaken
变形:3
常见例句
1
One who, or that which, weakens or makes feeble.
2
n a military operation (often involving new supplies of men and materiel) to strengthen a military force or aid in the performance of its mission n information that makes more forcible or convincing n (psychology) a stimulus that strengthens or weakens the behavior that produced it n a device designed to provide additional strength n an act performed to strengthen approved behavior
3
n (psychology) a stimulus that strengthens or weakens the behavior that produced it
4
plural of reinforcer n (psychology) a stimulus that strengthens or weakens the behavior that produced it
