Paleocurrent
[地质]古水流
🗣️ 情景例句
John and I celebrate our fortieth anniversary next month.
下个月John和我将庆祝我们的结婚四十年纪念。
What day was yesterday?
昨天是星期几？
They will hardly know which facts to select from the great mass of evidence that steadily accumulates.
对于逐渐积累起来的庞大材料，他们几乎不知道选取哪些好，