我练体操是因为我喜欢它，而不是因为我想成为世界上最好的。
I do gymnastics because I love it, not because I'm trying to be the best in the world.
翻译：指出深入研究文章可以分析器物的性能，而深入了解自然规律则可以审视器物的用途。
When we speak of 'meaning' a word， we are in the first instance speaking of a certain kind of act.
The past is always tense, the future perfect.
我在表演时不会考虑观众。我会考虑角色和故事。