At last we have good solid evidence for life over 3.4 billion years ago.
最终我们有了有力的证据证明34亿多年前有生命出现。
The earth became so violent that it was not clear whether the solid shape would last or not.
问题是地球开始变得激烈动荡，不知道这个固体形状是否会继续下去。
Retail sales data for May, also released last week, showed a solid 0.5 per cent rise.
零售出售数据为了可能，也释放上礼拜，表示固体0.5百分数上升。
Without a solid foundation, knowledge doesn't last.
没有坚实的基础，知识也会慢慢消失。
Without a solid foundation, knowledge doesn't last.
没有坚实的基础，知识也会慢慢消失。
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