🗣️ 情景例句
A year is really a short time, and later you will be glad you postponed getting married.
一年其实是很短的，过后你将会为你推迟了婚期而感到高兴的。
Don't forget to help him.
不要忘记帮助他。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。