①I felt uneasy at the presence of so many strangers.
面对这么多陌生人，我感觉很不自在。
②Unfortunately, the disastrous effects of the drought were felt all over the country.
不幸的是，干旱的灾难性影响遍及全国各地。
③Although sparrows showed no sign of declining, the chain was generally in an unhealthy state.
虽然麻雀数量没有减少的迹象，但食物链还是总体处于不健康的状态。
