signal
['signəl]
n.信号, 标志
v.(发信号)通知、表示
adj.显著的
例句与用法：
I corrected my watch by the time signal.
我按报时信号校正我的表。
Her speech yesterday was a signal that her views have changed.
她昨天的讲话标志著她的观点已经转变。
Is this announcement the signal of better times ahead?
宣布的这件事是否预示往後日子越过越好了？
The rise in prices was a signal for rebellion.
物价上涨引起了叛乱。
The police signalled the traffic to move forward slowly.
警察向来往车辆打信号，示意缓慢前行。
A red lamp is often a danger signal.
红灯常常是危险的信号。
词形变化：
名词: signaler | 动词过去式: signaled/signalled | 动词过去分词: signaled/signalled | 动词现在分词: signaling/signalling | 动词第三人称单数: signals/signals |
详细释义：
n.[C]
1. 信号; 暗号[+to-v][+that]
A red lamp is used as a danger signal.
红灯用作危险信号。
2. 信号器; 交通指示灯; 【铁】信号机
The train must stop when the signal's red.
信号机是红色时, 火车必须停驶。
3. 导因; 近因; 导火线[(+for)]
4. 标志; 表示
a.
1. 作为信号的[B]
2. 显著的, 非凡的
This year has seen one signal triumph for them in the election.
今年是他们在选举中取得重大胜利的一年。
vt.
1. 用信号发出; 标志
A period signals the end of a sentence.
句号表示一个句子结束了。
2. 用信号通知, 以动作向……示意[O2][+that]
She signaled the car to stop by raising her hand.
她举手示意车停下。
vi.
发信号, 打信号[(+to/for)]
The teacher signaled for quiet.
教师示意大家安静。