Ichthyosauria
鱼龙目
🗣️ 情景例句
This situation permits no delay.
在这种情况下，不允许有任何拖延。
By writing you learn to write.
从写作中学写作。
Because they destroy so many insects, and insects include some of the greatest enemies of the human race.
因为它们能消灭那么多的昆虫，其中包括一些人类的大敌，