Viras
核黄素四丁酯
🗣️ 情景例句
I always go back to the city in a wonderful state of mind.
我再回到城里时， 精神总是十分饱满。
It took him a long time to make up his mind.
下决心花了他很长时间。
it is extremely difficult to estimate the true value of the services which people perform for us.
但要估算别人为我们为所提供的服务的价值却是极其困难的。