[{"_1":2,"_78":-5,"_79":-5},"loaderData",{"_3":4},"lang-word",{"_5":6,"_21":22,"_67":68,"_73":74},"entry",{"_7":8,"_9":8,"_10":-5,"_11":12,"_13":14,"_15":16,"_17":18,"_19":20},"headword","concave","slug","pronunciation","type","adjective","complexity","simple","totalCollocations",1,"avgFrequency",6,"languageVariants",[],"categories",[23],{"_24":25,"_9":26,"_27":28},"name","ADJECTIVE + NOUN","adjective-noun","collocations",[29],{"_30":31,"_32":33,"_9":34,"_35":36,"_37":38,"_39":40,"_44":45,"_66":-5},"collocation","mirror","phrase","concave mirror","concave-mirror","usage","Used to describe a mirror that curves inward, like the inside of a bowl.","label","","frequency",{"_41":18,"_42":43},"score","perMillion",2.5,"examples",[46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65],"A large concave mirror is the primary component of a reflecting telescope.","A concave mirror converges parallel light rays to a focal point.","She uses a concave mirror for applying makeup because it magnifies her reflection.","Dentists often use a small concave mirror to examine teeth.","In the physics lab, we studied how a concave mirror forms a real image.","The reflecting telescope uses a large concave mirror to gather light.","The headlight of a car uses a concave mirror to focus the light into a beam.","Shaving mirrors are typically concave mirrors, providing a magnified image.","The shiny, inward-curving surface of the spoon acted like a small concave mirror.","She held the concave mirror, observing her magnified reflection.","For our science project, we will build a simple solar cooker using a concave mirror.","In physics class, we experimented with different focal lengths of a concave mirror.","Dentists often use small concave mirrors to get a magnified view of the teeth.","A concave mirror can form both real and virtual images depending on object distance.","Legend says Archimedes used a giant concave mirror to set enemy ships on fire.","The car's headlight assembly contains a concave mirror to project light forward efficiently.","To find the focal point, you must shine parallel rays of light onto the concave mirror.","To create a focused beam, a light source is placed at the focal point of a concave mirror.","The image produced by the concave mirror was inverted and larger than the object.","He learned about the properties of a concave mirror during his optics lecture.","translation","relatedEntries",{"_69":70,"_71":72},"asSubject",[],"asObject",[],"serverTranslations",{"_34":75},{"_32":76,"_35":77},"凹面镜","表面向内弯曲的镜子","actionData","errors"]