sentinel

'sentinl

GRE

n a person employed to keep watch for some anticipated event

n. 哨兵, 标记
vt. 警戒, 守卫
[计] 标记

20,447

BNC 频率

19,315

使用频率

sentinel 由词根 sent-（感知、感觉）和后缀 -inel 组成，表示“守卫”或“监视者”。可以联想到“感知”的人是在守护某个地方。

例句

1. The sentinel stood guard at the entrance of the castle.

哨兵在城堡的入口处站岗。

2. In ancient times, sentinels were essential for protecting the village.

在古代，哨兵对于保护村庄是必不可少的。

3. The sentinel watched over the area to ensure everyone's safety.

哨兵监视着这个地区，以确保每个人的安全。