| 释义 |
DEFINITIVE EXAMPLES 权威例句〔root knot〕A disease of plants characterized by protuberant enlargements on the roots caused by a nematode.根癌，根瘤病：一种由于线虫的破坏而在根部长出隆起肿块的植物病美国传统〔wheal〕A small swelling on the skin, as from an insect bite, that usually itches or burns.疹块：皮肤上的小隆起肿块儿，如被虫咬过后，常瘙痒或伴随有灼伤感美国传统In some people, histamine can cause unpleasant reactions such as swelling when they come into contact with things like pollen.组胺会对一些人产生不良反应，比如说当他们接触到花粉时，身上会起肿块。剑桥国际 |