It is only recently that crude oil has come to be used to make chemical products.
彼は今までに9体の人型ロボットを製造していたが、その全てはデモンストレーションモデルだった。
Up to now he had made nine humanoid robots but they were all demonstration models.
その女の子は、数冊の本を抱えていた。教科書じゃなく、分厚い上製本。
The girl was carrying several books, not textbooks but thick hardback books.
暖房と同様に、冷房時の消費電力量を測定し、旧型と省エネ型(2001年製)のエアコンを比較しました。
We measured the electricity used during air cooling in the same way as heating, and compared the old model air conditioner to the energy conservation (2001) model.