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
Help me with them, Marilyn.
帮我戴上， Marilyn。
The first wealth is health.
健康是最重要的财富。
Every year, several classes visit the factory.
每年都有好几个班去参观这家工厂。