     screenshots: "螢幕截圖"
     character_art: "角色美術作品"
     download_all: "下載全部"
-    previous: "上一個"
+    previous: "上一步"
     location_title: "我們位於城鎮 SF："
 
   teachers:

#    view_gallery: "View Gallery"
#    project_published_noty: "Your level has been published!"
#    keep_editing: "Keep Editing"
#    learn_new_concepts: "Learn new concepts"
#    watch_a_video: "Watch a video on __concept_name__"
#    concept_unlocked: "Concept Unlocked"
#    use_at_least_one_concept: "Use at least one concept: "
#    command_bank: "Command Bank"

    trees: "資料結構 - 樹狀結構"
    variables: "變數"
    vectors: "向量"
    while_condition_loops: "While 含條件循環 "
    while_loops_simple: "While 循環"
    while_loops_nested: "巢狀 While 循環"
    xy_coordinates: "Cartesian Coordinates(笛卡爾座標) "
    advanced_strings: "進階字串" # Rest of concepts are deprecated
    algorithms: "算法"
