Backdoor
a. 秘密的
✅ 同义词
🗣️ 情景例句
Those were great days and we were very happy.
那些日子美好极了，我们过得很幸福。
What kind of climate do you have?Is it humid?
你们那里的天气怎么样？它是潮湿的吗？
Time is more valuable than money.
时间比金钱宝贵。