You're good at drinking juice out of a (plastic) bottle now, aren't you!
Now you can drink out of a bottle, just like mummy!
You want to drink out of a bottle like mummy, don't you?
「ペットボトルでジュース飲むのうまくなったね」＝ You're good at drinking juice out of a (plastic) bottle now, aren't you! / Now you can drink out of a bottle, just like mummy!
「ママと同じもの(ペットボトル)で飲みたいんだね」＝ You want to drink out of a bottle like mummy, don't you?
「あっ、少しこぼれちゃったね。」＝ Oops! You've just spilt a bit!
ボキャブラリー
good at ～ ＝ ～が上手、うまくなった
plastic bottle ＝ ペットボトル
drink ＝ 飲む
just like mummy ＝ ママと同じように
want to drink ＝ 飲みたい
oops ＝ あら！しまった！
spill （過去形・過去分詞）：spilt/spilled ＝ こぼす
a bit ＝ ちょっと
"You're getting good at drinking juice from a bottle."
"You want to drink from the same bottle as mommy, don't you? Oh, you spilled a little."
- "You're getting good at drinking juice from a bottle."
「ペットボトルでジュースを飲むのが上手くなったね。」
- "You want to drink from the same bottle as mommy, don't you?"
「ママと同じボトルで飲みたいんだね。」
- "Oh, you spilled a little."
「あっ、少しこぼれちゃったね。」
関連する単語とフレーズ:
- good at: 上手
- bottle: ボトル
- spill: こぼす
- mommy: ママ
- drink: 飲む
イギリス 
アメリカ合衆国 
