我们在这里上科学课。
We have our science lessons here.
他们不知道我们在这里！
They've got no idea we're here!
我们在这里野餐吧。
Let's have a picnic here.
放学后，我们在这里跑步或踢足球。
After school, we run or play football in it.
这就是我们在这里观察藏羚羊的原因。
This is why we're here—to observe Tibetan antelopes.
