They reported their lastest insight into this early morning "wallofsound" in the journal Behavioural Ecology and Sociobiology.
他们在《行为生态学和社会生物学》杂志上把对今天凌晨的“音墙”的最新见解给报道出来。
2
By the time he passed four thousand feet he had reached terminal velocity, the wind was a solid beating wallofsound against which he could move no faster.