Dco
abbr. doppler cutoff; double crossover (genes) 多普勒截止; 双叉（基因）; draft collection only 纯汇票收集
🗣️ 情景例句
Goodbye, hope to see you again.
再见， 希望再次见到你。
The problem is far from easy.
这问题绝非易事。
It has to be tall because it is like a giant block and tackle,
井架必须很高，因为它像一个巨型滑轮组。