🧩 词语组成解析
upon
[ə'pɑn]
prep. 在…上面;当…时候;
🗣️ 情景例句
Sure ... and a little scared.
当然……还有一点紧张。
I have a complaint.
我要投诉。
The ideal to be aimed at was to devise an instrument that could record with a pen on paper,
当地震发生时,它能用笔在纸上记录下