When you're out in the fresh air like this, it makes you hungry.
当你来外面呼吸这么新鲜的空气时, 就很容易饿。
Hold fast when you have it.
紧握你手中之物。
I was doing some exercises on the high-and-low bars. When I landed, I fell forward and hurt myself. Someone was standing too close and I knocked into him and fell over onto my shoulder.