

この牧場にはにゅうぎゅうが五十頭います。
毎朝、にゅうぎゅうの乳をしぼるのが祖父の仕事です。
白と黒のにゅうぎゅうを見たことがありますか。
"にゅうぎゅう(乳牛)" is in the lesson "Domestic animals" (Level 7), along with 13 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.