每日口說挑戰什麼？源自美國的五一勞動節竟然不是美國的國定假日？！究竟是誰扼殺了美國這重要的一天？（Who Killed May Day in the USA? America's Forgotten Labor Struggle）

Hi, everyone, this is Susan; welcome to today’s Pronunciation Challenge. Happy Labor Day, everyone! Whether or not you have today off, this is an important day to appreciate the devotion of workers and those who made this celebration possible. But I had no idea that, in the US, where this day originated, they don’t celebrate the day on May 1st! Before you go to the video to learn more about it, let's take a look at today's sentence and its pronunciation tips.

Sentence
It's sad and shameful that these important events of labor history have been so completely and utterly wiped from the public consciousness of American workers.

Pronunciation Tips
1. shameful (the pronunciation of the vowels)
2. labor (the pronunciation of the vowels)
3. utterly (the pronunciation of u and tt)
4. consciousness (the pronunciation of sc and word stress)

Vocabulary
1. wipe (v) 抹去 KK [waɪp] IPA /waɪp/
to remove
Eg. His head injury wiped his memories; he doesn’t remember a thing!
他的頭部創傷抹去了他的記憶，他一件事都不記得了！

So, why do you think May 1st is not International Workers’ Day in the US? Do they celebrate it at all? Why not watch the video and find out? But don't forget to record the sentence first, and I'll see you in the next episode!

It's sad and shameful that these important events of labor history have been so completely and utterly wiped from the public consciousness of American workers.

It's sad and shameful that these important events of labor history have been so completely and utterly wiped from the public consciousness of American workers,