

雪の上に動物の足跡が残っていました。
この足跡はクマのものかもしれません。
テントの周りに誰かの足跡はありませんでしたか。
"あしあと(足跡)" is in the lesson "Camping 2" (Level 25), along with 9 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.