✅ 同义词
🗣️ 情景例句
But you had to be good at math.
但是你数学一定很好。
All our work was in vain.
我们白干了一场。
A French physician decided to get rid of the wild rabbits on his own estate and introduced myxomatosis.
一位法国内科医生决定除掉自己庄园内的野兔子，于是引进了这种多发性粘液瘤疾病。