line art cup
杯 - 藝術線條
BuJo、coffee、Cup、Geschirr、Kaffee、line art、outline、Reading deck、small printable school cliparts、tableware、Tasse、tea、Tee
麥女人、咖啡、杯子、陶器、咖啡、線條藝術、大綱、閱讀甲板、小型可打印學校教具、餐具、稅、茶、T卹
資料來源：openclipart ( https://openclipart.org/ )

I hope that at least some of the current generation has actually had a chance to use one of these things. It won't be long until most people might not even know what one of these things are. Authors traditionally like them, but I suppose they aren't so easy to write with these days.
簡單的老打字機
accurate、ksvsm black and white images、old、technology、type、typewriter、type writer
準確、ksvsm黑白圖像、舊、技術、類型、打字機、打字員
資料來源：openclipart ( https://openclipart.org/ )

icon showing a grey cloud
灰雲圖標
cloud、cloudy、Nature、remix 173752
雲、多雲的、性質、混音173752
資料來源：openclipart ( https://openclipart.org/ )

Cute little Ghost for Halloween
鬼
Sticker Collection、white ghost halloween
貼紙集合、白鬼萬聖節
資料來源：openclipart ( https://openclipart.org/ )

This image was donated by Pearson Scott Foresman, an educational publisher, to Wikimedia Commons, and is thereby in the Public Domain.---See http://commons.wikimedia.org/wiki/Category:Pearson_Scott_Foresman_publisher
熊貓
animal、biology、black and white、endangered species、externalsource、line art、mammal、outline、panda、psf、wikimedia commons、zoology
動物、生物學、黑與白、瀕危物種、外部源、線條藝術、哺乳動物、大綱、熊貓、PSF、維基媒體公地、動物學
資料來源：openclipart ( https://openclipart.org/ )

a special clock-style: every hand has it's own center.
手錶＃2 - 調節器
clock、regulateur、time、watch、wristwatch
時鐘、調節器、時間、看、手錶
資料來源：openclipart ( https://openclipart.org/ )

A black cat standing and raising its back.
黑貓
animal、black、cat、feline、mammal、pet、Silhouettes
動物、黑色、貓、貓的、哺乳動物、寵物、剪影
資料來源：openclipart ( https://openclipart.org/ )

This is over 100 years old, so anatomically it could be less than correct. However, there can never be enough diagrams of the brain and the brain-stem including the visual cortex. That's hot stuff!
腦圖
anatomy、body、brain、diagram、health
解剖學、身體、腦、圖、健康
資料來源：openclipart ( https://openclipart.org/ )

Avocado.
鱷梨
avocado、conuco、eat、food、fruit、intersyllabic v
鱷梨、CONUCO、吃、餐飲、水果、Intersillabic in
資料來源：openclipart ( https://openclipart.org/ )

a abstract flower
摘要042
abstract、floral、flower、freeform、free form、retro、shape、shapes
抽象、花的、花、自由形式、自由形式、復古、形狀、形狀
資料來源：openclipart ( https://openclipart.org/ )