A yellow smiley face (emoticon) singing, with dark red musical note
唱歌的笑臉
choir、emoticon、music、musical note、orchestra、singing、smiley、song、Verbs
唱詩班、表情、音樂、音符、樂隊、唱歌、笑臉、送、動詞
資料來源：openclipart ( https://openclipart.org/ )

unedited from commons.wikimedia.org/wiki/Image:FireIcon.svg
火圖標
cartoon、externalsource、fire、NCOC clip art
動畫片、外部源、火、NCOC剪貼畫
資料來源：openclipart ( https://openclipart.org/ )

Black silhouette defining a female body shape.
女人剪影29
female silhouettes、Formen、outline、people、shape、silhouette、woman 、woman silhouette
女性剪影、形狀、大綱、人、形狀、輪廓、女人、女人剪影
資料來源：openclipart ( https://openclipart.org/ )

Hearts for Valentine's Day
情人節的心
valentines、valentines day、worldnews、worldnews2014、worldnews2014-02、worldnews2014-02-14
情人節、情人節、世界新聞、worldnews2014、worldnews2014-02、worldnews2014-02-14
資料來源：openclipart ( https://openclipart.org/ )

Drawing by Nina Geometrieva. Used with permission, original file available here: dribbble.com/shots/1392995-UUUU-icon-set
畢業帽
cap、college、education、graduating、graduation、hat、school、senior、university
頭、學院、教育、畢業、畢業、有、學校、前輩、大學
資料來源：openclipart ( https://openclipart.org/ )

an image from the US government EPA "Sunwise" program. I converted it from PDF format, and removed all the "sunwise" logos. the source link is here - http://www.epa.gov/sunwise/doc/mission_story.pdf
望著窗外的孩子們
child、epa、epa sunwise、kids、outside、park、play、playground、shade、window
兒童、EPA、epa sunwise、孩子、外、公園、玩、操場、陰涼處、窗口
資料來源：openclipart ( https://openclipart.org/ )

I don't like gradients but I like penguins, so there you go :)
可愛的圓形卡通企鵝（平面顏色）
animal、bird、cartoon、color、colour、Creatures、Must have、penguin、Pirate Stuff、tux
動物、鳥、動畫片、顏色、顏色、生物、一定有、企鵝、海盜的東西、晚禮服
資料來源：openclipart ( https://openclipart.org/ )

Cartoon Snail Art
卡通蝸牛藝術
Cartoon Snail Art、KIDS、MSB、Things to Render
卡通蝸牛藝術、KIDS、MSB、要渲染的東西
資料來源：openclipart ( https://openclipart.org/ )

Lotus Line Art 2
蓮花線藝術2
Abstract、colorbook clipart、Floral、Flower、Geometric、Line Art、Lotus、Silhouette
抽象、彩色書剪貼畫、花的、花、幾何、線條藝術、蓮花、輪廓
資料來源：openclipart ( https://openclipart.org/ )

From what I understand, Rosa Parks is a very important part in the remembrance of the civil rights movement in the United States. She is famous for refusing to go to the back of the bus, which was the standard practice at the time. I figured we should have some good public domain clipart of this historical person. (To be clear this is based on a US Government, thus public domain, image.)
羅莎公園
1950s、1960s、African American、America、black、Civil Rights、face、famous、famous-people、female、history、pride、remembrance、Rosa Parks、USA、woman
20世紀50年代、20世紀60年代、非裔美國人、美國、黑色、公民權利、面對、著名、著名的人民、女、歷史、自豪、紀念、羅莎公園、美國、女人
資料來源：openclipart ( https://openclipart.org/ )