Biologists were delighted early this year when, with the help of the Navy, they were able to track a particular blue whale for 43 days, monitoring its sounds.

今年早些时候，当生物学家们在海军的帮助下，能够追踪一只特定的蓝鲸长达43天并监测它的声音时候，生物学家们很高兴。