像我们这样的人在这样的情况下,我们必须确保他们看到我们。
我们开采的每一桶石油都必须以最小的环境影响负责任地进行。
The security dilemma is a fundamental feature of international politics, as states' efforts to increase their own security often decrease the security of others.
I'm not afraid of loneliness because music accompanies me.