Last year marked the third year in a row of when Indonesia’sbleak rate of deforestation has slowed in pace. （2021考研英语一第二篇首句）。
这个句子中the third year in a row that... /when 好像也可以说的通，但原文中的the thirdyear in a row of when...是不是有语法错误呢？
你这个问题在海外平台上一年前就有讨论，不过讨论没什么结果。我说一下我的怎么看，未必对：
词典中网站收录的有the third year in a row that... 的说法。有third，所以关系分句一般用that，in a row在这里意思是consecutively连续地。
This is the third year in a row that the rains have failed.
This is the third day in a row that it‘s rained.
而原文的in a row of when这种说法还是有些，极少，词典中并没网站收录，不需要找了，以下材料源自互联网：
1.In addition to much-needed moisture, cooler temperatures are also aiding firefighters. Thetemperature in Fairbanks failed to hit 70 degrees for the second day in a row on Thursday,ending what had been a string of 23 days in a row of when the temperature hit at least 70 atthe airport until Tuesday.
2.It creates certain memories and I love clothes. To me, what I wear is almost like art. I’m so happy that in tennis you don’t have to wear uniforms and really what you're wearing expresses what you were thinking when you were designing that product. I don’t know, it brings back really good memories – some bad, because you lost in certain out«Îts – but I have them all in a row of when I wore them…….
语法上也不难理解，把 in a row of（本意是一排排的房子，座位等）用作了比喻的意义，“在那些一段段......的时间/时光中”，非常形象和生动。
