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
You've been a great help.
你帮了大忙。
I ask him to do the housework now.
我要求他现在做家务。
Two weeks ago it had a baby.
两周前它生了个孩子。