When the startup offered to buy his prototype at a fair price, he who hesitates is lost, and by the time he decided the opportunity had already gone.

I lost my bag — my blue backpack slipped out of the overhead compartment on the train this morning.

After dinner I realized I lost my wallet, so I retraced my steps back to the restaurant.

After the meeting, I realized I lost my handbag and rushed back to the conference room to look for it.

I lost my keys right before the job interview, so I had to call a colleague to let me in.

I've lost my keys, so I'm waiting outside in the rain.

I lost my glasses yesterday at the park while feeding the ducks.

After the concert, I realized I lost my backpack near the main gate.

After months of delays, we decided to make up for lost time by working through the weekend.

We won the battle, but lost the war, and that failure undermined all our gains.