
好词典

源自古英语 gōma(颚部),后受古法语 gomme(树胶)影响,两者均源自拉丁语 gummi,最终来自希腊语 kommi(埃及树胶)。
❶ 指口腔中包裹牙齿的粉红色软组织,俗称牙龈。负责固定牙齿并保护牙根,健康的牙龈呈淡粉色且紧贴牙齿。
“Brushing your teeth twice a day helps keep your gums healthy.”
(每天刷牙两次有助于保持牙龈健康。)
“Her gums were bleeding after she flossed too hard.”
(她用牙线太用力后牙龈出血了。)
❶ 指某些植物分泌的黏性物质,如树胶或口香糖的原料,具有粘合或可咀嚼的特性。
“The artist used gum arabic to bind the pigments in the paint.”
(艺术家用阿拉伯树胶调和颜料。)
“Chewing gum is made from synthetic gums these days.”
(现在的口香糖是用合成胶基制成的。)
gum up — 指因粘性物质导致机器或系统运转不畅,比喻把事情搞复杂或弄糟。
“Too much oil can gum up the engine over time.”
(过量机油会逐渐导致发动机运转不畅。)
by gum — 旧式感叹语,表示惊讶或强调,类似“天哪”或“哎呀”的意思。
“By gum, that's the best pie I've ever tasted!”
(天哪,这是我吃过最好吃的派!)