Testcross
n. 测交(一种使杂种子一代与隐性类型交配以测定杂种子一代遗传型的方法)
🗣️ 情景例句
Since you don't have enough income,
由于你们的收入不够
Guess how old I am.
猜测我有多大。
In summer it is often too hot, and in winter it is too cold.
夏天常常太热，冬天又常常太冷。