lamb, mutton

I order lamb.

私は羊肉を注文します

I order lamb at the restaurant.

私は店で羊肉を注文します

I order a plate of lamb at the restaurant.

私は店で羊肉を一皿注文します

I order a plate of lamb at the restaurant in the evening.

私は夕方に店で羊肉を一皿注文します

I order a plate of lamb at the restaurant with my younger brother in the evening.

私は夕方に弟と店で羊肉を一皿注文します