Igf
abbr. 胰岛素样生长因子（Insulin-like Growth Factor）；国际遗传学联合会（International Genetics Federation）；插入系统元文件
🗣️ 情景例句
You're very lucky to have a caring family.
你很幸运有一个温馨的家庭。
May I ask you a question?
我可以问一个问题吗？
Yes. You have to practise a lot.
是的，你得大量的练习。