Dr Hallett is one of a small band of latter-day snowflake researchers.
Dr Hallett is one of a small band of latter-day snowflake researchers.
哈来特博士是现在雪花研究者中的一员。
Dr Hallett is one of a small band of latter-day snowflake researchers.
哈来特博士是现在雪花研究者中的一员。