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
There's nothing you can do about it.
你对此无能为力。
A young married couple moved in next door to us.
一对年轻结婚的夫妇搬到了我们的隔壁。
There was only one problem: the man upstairs.
住在楼上的人。