标签：headgear 相关文章
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Triceratops, as the name suggests, were huge dinosaurs adorned with three horns on their heads. Scientists now say those horns may have been a sort of
发表于:2018-12-24 / 阅读(68) / 评论(0)
Scientific American(一)月
Scientific American(一)月
Do the bands cut the gums or the cheeks? 带环会不会损伤牙龈或者脸颊？ Sometimes they do, but it's not a big problem if you're careful. 有时会，但是若是小心的话就不是个大问题。 How long will it take to finish his trea
发表于:2018-12-27 / 阅读(56) / 评论(0)
口腔临床英语对话
口腔临床英语对话
Pre-Listening Vocabulary personnel: people who work for an organization knight: a soldier in the Middle Ages visor: a shield that goes over ones face gesture: body language rank: the level of seniority brim: the edge of a hat initiate: to begin or le
发表于:2019-02-27 / 阅读(172) / 评论(0)
趣谈英语
趣谈英语