Psst
int. 为引起人的注意时所发的声音
📖 牛津释义
psst
interj (used to attract sb's attention secretly or furtively 用以暗中或悄悄提起他人注意)
`Psst! Let's get out now before they see us!' ｀嘘! 趁著现在他们没看见, 咱们走吧!＇
🗣️ 情景例句
Didn't you give them to Richard?
你不是把它们交给Richard了吗？
Let me direct that question to the manager.
让我直接问经理好了。
it has to develop (partly by means of touch) the ability to judge roughly three-dimensonal distances.
儿童必须发展（部分通过触觉）粗略判断三维空间距离的能力。