🧩 词语组成解析
post
[post]
n. 邮件;邮政;柱，桩，杆;岗位;
vt. 张贴;宣布;设岗;邮寄;
vi. 快速行进;
adj. 有关赛跑（或赛马，赛狗）起点标志的;
adv. 〈外〉在后;用急件[驿马];赶紧地，火速地;
pos, posit pos, posit=put, 表示”放”
polio
['pəuliəu]
n. <医>脊髓灰质炎（等于poliomyelitis）;
🗣️ 情景例句
When you feel your life is threatened, just dial 999 to get help.
当你的生命受到威胁的时候，拨打 999 求救。
Could you tell me where is the elevator?
你能不能告诉我电梯在哪里？
We gently woke him up and asked him to ferry us to the other side.
我们轻轻地把他唤醒，请他把我们摆渡过溪。