I would watch and see them both nod, as if they understood each other.
我看到他们两个人点着头，似乎彼此非常理解。
Many people nod when they agree with something.
多数人在同意某件事时会点头。
Sometimes they look up and smile or nod but rarely does anyone say anything.
他们也不相互交谈，最多偶尔抬抬头，或微笑，或点头。
They also have touch sensors and will nod and wave on demand.
另外它们还装有触摸传感器，可以根据指令点头或招手。
For example, when two acquaintances meet each other, they usually nod their heads or smile.
比如，两个熟人见面，一般点点头，互相微笑。
For example, when two acquaintances meet each other, they usually nod their heads or smile.
比如，两个熟人见面，一般点点头，互相微笑。
应用推荐