catoptric light用: 40分钟跑完全程 run the course in 4 ...反射器: dish; reflector形成: form; take shape; shape; for ...平行: of equal rank; on an equal f ...光束: light beam a surname下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:用反射器形成平行光束的灯光，即可在微信中查询翻译
