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02:17
【十萬個為什麼】問題37:人為什麼打呵欠?
184 views
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2 years ago
Otto's Drawing
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02:21
【十萬個為什麼】問題42:雞為什麼吃小石子?
266 views
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2 years ago
Otto's Drawing
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02:16
【十萬個為什麼】問題10:汽車輪胎上為什麼有許多花紋?
452 views
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2 years ago
Otto's Drawing
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02:32
【十萬個為什麼】問題52:人為什麼會做夢?
423 views
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2 years ago
Otto's Drawing
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02:19
【十萬個為什麼】問題40:工廠的煙囪為什麼那麼高?
186 views
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2 years ago
Otto's Drawing
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02:45
【十萬個為什麼】問題15:降落傘的頂上為什麼有一個小洞?
374 views
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2 years ago
Otto's Drawing
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02:21
【十萬個為什麼】問題32:霧是從那裡來的?
251 views
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2 years ago
Otto's Drawing
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02:11
【十萬個為什麼】問題38:水開時壺蓋為什麼會跳動?
206 views
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2 years ago
Otto's Drawing
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02:39
【十萬個為什麼】問題35:輪船為什麼要鳴汽笛?
205 views
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2 years ago
Otto's Drawing
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02:25
【十萬個為什麼】問題43:萬花筒為什麼能變出那麼多花樣?
262 views
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2 years ago
Otto's Drawing
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02:27
【十萬個為什麼】問題9:鞋底上為什麼會有花紋?
558 views
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2 years ago
Otto's Drawing
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02:43
【十萬個為什麼】問題57:為什麼油燒著了不能用水澆?
175 views
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2 years ago
Otto's Drawing
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02:25
【十萬個為什麼】問題16:感冒時吃東西為什麼覺得沒味道?
355 views
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2 years ago
Otto's Drawing
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02:18
【十萬個為什麼】問題29:電是從那裡來的?
394 views
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2 years ago
Otto's Drawing
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02:26
【十萬個為什麼】問題27:沙漠是那裡來的?
227 views
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2 years ago
Otto's Drawing
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02:22
【十萬個為什麼】問題36:老鼠為什麼啃木頭?
200 views
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2 years ago
Otto's Drawing
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02:29
【十萬個為什麼】問題26:江河裡的水是從那兒來的?
232 views
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2 years ago
Otto's Drawing
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02:24
【十萬個為什麼】問題49:為什麼河面上結了冰,下面還有魚在游?
521 views
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2 years ago
Otto's Drawing
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02:34
【十萬個為什麼】問題4:鍋和碗為什麼做成圓形的?
947 views
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2 years ago
Otto's Drawing
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02:45
【十萬個為什麼】問題53:人從水裡出來為什麼全身發冷?
354 views
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2 years ago
Otto's Drawing
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