英语听力精选进阶版 13269（在线收听）

Heavy armour might have defeated 'knights'

clad top-to-toe in (something)

wearing something from head to foot

bulky

large and difficult to manage

tough

difficult

a treadmill

a fitness machine used for walking and running

restricted

limited

played a part in (something)

been partly responsible for

outnumbering

having many more soldiers

to trek

to make a slow and difficult journey

exhausted

very tired

downfall

losing the battle