obstacles
n. 障碍；障碍物；阻碍（obstacle 的复数）
例句
The area was full of streams and bogs and other natural obstacles.
此地遍布小溪、泥潭和其他天然障碍。
《牛津词典》
The wheel is designed with obstacles in the ball's path to randomize its movement.
这个轮盘在小球的行进路线上设计了令其能够随机停下的障碍。
《柯林斯英汉双解大词典》
Currency-conversion costs remain one of the biggest obstacles to cross-border trade.
货币兑换成本仍是跨境贸易的最大障碍之一。
