Visual aids
其它 Other直观教具
🧩 词语组成解析
AIDS
[eidz]
abbr. acquired immune deficiency syndrome 获得性免疫缺乏综合征（爱滋病）;acute infectious diseases 急性传染病;aircraft integrated data system 飞行器集成数据系统;
n. 助手( aid的名词复数 );外援;辅助设备vi.;帮助;
🗣️ 情景例句
It's nice to meet you.
很高兴见到你。
If he doesn't play, who will?
如果他不，谁要去玩？
For our purposes, we are concerned only with one kind of cost----
就我们的目的而言，我们只关心一种费用-