在这段时间里，他走遍了明朝，仔细研究他所经过的土地，并把他的经历和许多发现记录在日记里。
During this time, he travelled throughout the Ming kingdom, carefully studying the lands he passed through and recording his experiences and many discoveries in a diary.
经过多年的仔细研究，天文学家发现了一颗与地球相似的行星。
After many years of scrutinizing, astronomers have found a planet that is similar to the Earth.
研究员马上认识到这些深棕色的小物体就是鲨鱼卵，经过仔细查看还可以看见卵黄。
The researchers quickly realised that these were sharks’ eggs.
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