A cold and reserved young man who wields a spear known as Cloud-Piercer. He acts as the Express' guard on its long trailblazing expedition.
清冷寡言的少年，持有名為「擊雲」的長槍，於列車漫長的開拓之旅中擔任護衛。
*清冷寡言的 cold and reserved。
*長槍 spear。使用武器用wield，比如持劍 wield a sword。
*擊雲 Cloud-Piercer。字面意思為雲-穿孔機。
*開拓之旅 trailblazing expedition
Dan Heng never talks much about his past. In fact, he joined the Express Crew to escape from a past of his own making.
丹恆對自己的過往始終諱莫如深，他與列車同行正是為了擺脫自己曾親手造就的一切。
*諱莫如深 talks much about 。或者也可以用closely guard a secret，unduly reticent on the subject of等等。
But can the Express really help him outrun his past?
然而，列車真的會帶著他遠離「過去」麼？
*遠離 outrun。英文釋義為to run faster or further than sb/sth 跑得比…快（或遠）；超過。
突然覺得這裡很有深意，每個人都有可能為自己的過去後悔，只有勇敢努力地前進，才能outrun自己的過去。
詞彙複習：
reserved 寡言少語的，內斂的
spear 長槍
Piercer 穿孔機
expedition 遠征，考察
closely guard a secret 諱莫如深
outrun 超過