lookout
n.守望；远景，前途；瞭望台；警戒
网络解释.警戒；当心；了望台；景色
词形变化:
复数：lookouts
be on the lookout (或 keep a lookout for) 1 . 警觉地注意（危险，困难）
observer perspective scene prospect panorama
双语例句
1. 1 . He denied that he'd failed to keep a proper lookout that night.
他否认当晚守望不力。
来自柯林斯例句