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A1 初級
n. (c.)可數名詞促銷代碼
Enter your promocode at checkout to receive the discount.
n. (c.)可數名詞線上促銷代碼
I found a promocode online that gave me 20% off my order.

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为何空客几乎没有发生：A300的故事（Why Airbus Nearly Didn’t Happen: The A300 Story）

11:25为何空客几乎没有发生：A300的故事（Why Airbus Nearly Didn’t Happen: The A300 Story）
B1 中級

慢動作中的射手悖論--每天更聰明 136 (The Archer's Paradox in SLOW MOTION - Smarter Every Day 136)

08:51慢動作中的射手悖論--每天更聰明 136 (The Archer's Paradox in SLOW MOTION - Smarter Every Day 136)
B1 中級

超慢動作的加農衝擊波--每天更聰明 200 (Cannon Shock Waves in Ultra Slow Motion - Smarter Every Day 200)

13:39超慢動作的加農衝擊波--每天更聰明 200 (Cannon Shock Waves in Ultra Slow Motion - Smarter Every Day 200)
B1 中級