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
about five years ago.
大约五年前。
It takes all sorts to make a world.
万千事物，形成世界。
What about you?
你呢？