But the two-toed tree toad tried in vain.
可是，二趾蟾蜍徒劳无功。
He was a two-toed tree toad but a three-toed toad was she.
牠是一只二趾的蟾蜍，而蟾蜍女郎是三趾的。
The two-toed tree toad tried to win the three-toed she-toad's heart, for the two-toed tree toad loved the ground that the three-toed tree toad trod.
那只二趾的树蟾蜍尝试夺取三趾蟾蜍女郎的方心，因为二趾蟾蜍喜欢三趾蟾蜍女郎所踩踏的土地。
We propose and describe an all-optical prefix tree adder with the help of a terahertz optical asymmetric demultiplexer (TOAD) using a set of optical switches.
提出一种基于太赫兹光学非对称解复用器的全光前缀树加法器，在其中使用了多个光开关。
We propose and describe an all-optical prefix tree adder with the help of a terahertz optical asymmetric demultiplexer (TOAD) using a set of optical switches.
提出一种基于太赫兹光学非对称解复用器的全光前缀树加法器，在其中使用了多个光开关。
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