The sappers belt out their song from the campaign in Poland.

工兵在波兰的战役中歌。

For instance, the woodcutters from the Windsor Castle estate were sent to France as trench sappers.

例如，温莎城堡庄园的伐木工人派往法国担任战壕工兵。

Ditto for the sugar in soda and many fruit juices. Above all, stay hydrated: Dehydration is a powerful energy sapper.

汽水和汁中的糖也是如此。最重要的是，一定要补水。脱水是 让人感到疲倦的主要原因。