车速飞快时信号不稳定，在地下则根本没信号，但是总体质量是在不断上升的。
The reception isn't great while travelling at speed and doesn't work at all underground. But the quality is improving all the time.
联合国儿童基金会说，许多救援机构报告说，由于总体形势不稳定，同时由于联合国儿童基金会在一份声明中所说的有关当局发出威胁或者要求，给儿童的援助受到限制。
It says many aid agencies report restricting aid to children, due to the general uncertainty and what UNICEF describes in a statement as "threats" or "requests to do so by authorities."
国际形势总体趋向缓和，但不稳定因素继续存在。
While the international situation is moving towards detente in general, unstable factors still exist.
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