Laboured

The slogan "Arbeit macht frei" at the gates of the Nazi concentration camps was entirely cynical. The prisoners who believed the deceitful promise that work would set them free had no real chance of freedom, regardless of how much they laboured. Many of them were worked to death; many more were deliberately exterminated.

The dog's laboured breathing and glazing eye showed that it was not far from its end. Indeed, its snow-white muzzle proclaimed that it had already exceeded the usual term of canine existence.

He laboured to restrain his desire to speak.

Among the familiar things that he would encounter would be creatures recognizably human yet in his view grotesque. While he himself laboured under the weight of his own body, these giants would be easily striding. He would consider them very sturdy, often thick-set, folk, but he would be compelled to allow them grace of movement and even beauty of proportion. The longer he stayed with them the more beauty he would see in them, and the less complacently would he regard his own type. Some of these fantastic men and women he would find covered with fur, hirsute, or mole-velvet, revealing the underlying muscles. Others would display brown, yellow or ruddy skin, and yet others a translucent ash-green, warmed by the under-flowing blood. As a species, though we are all human, we are extremely variable in body and mind, so variable that superficially we seem to be not one species but many.

Millions of human beings have laboured to create this civilization on which we pride ourselves today. Other millions, scattered through the globe, labour to maintain it. Without them nothing would be left in fifty years but ruins.

I like his books, but you have to get used to his laboured style.

My breathing became more laboured.

We laboured up a hill.

At the end of the marathon, her laboured breathing told us she was exhausted.

At Par, 150207 is the unit for the 1416 to Newquay. It is quite tatty and lacks tables - but does have plug sockets. It sounds laboured as it leaves, and while it sounds like it's struggling as it tackles Luxulyan, it's not losing time.