signal a change
collocation表明变化；预示变化
The latest figures signal a change in the market.
最新数据表明市场发生了变化。
示意；表明；发出信号
signaling — present participle of signal
先理解核心含义，再看它在真实句子里的用法。
示意；表明；发出信号
to show or communicate something using a signal
The teacher signalled the students to be quiet.
老师示意学生安静。
用信号表示；通过信号传达
To indicate; to convey or communicate by a signal.
通过信号与(某人或系统)通信
To communicate with (a person or system) by a signal.
signal
Base
原形
signals
3rd person
第三人称单数
signalling
-ing
现在分词
signalled
Past
过去式
signalled
Past participle
过去分词
She signals her intentions clearly.
她清楚地表明她的意图。
He signalled for help when he saw the accident.
他看到事故时发出了求救信号。
The referee is signalling a foul.
裁判正在示意犯规。
注意：英式英语中过去式和现在分词双写'l'，美式英语则单写。
She signalled that she needed help by raising her hand.
她举手示意需要帮助。
The driver signalled left before turning.
司机在转弯前发出了左转信号。
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表明变化；预示变化
The latest figures signal a change in the market.
最新数据表明市场发生了变化。
表明意图
He signalled his intention to leave the company.
他表明了自己离开公司的意图。
表示同意；示意认可
She signalled her approval with a smile.
她微笑着表示同意。
发出求救信号
The trapped climbers signalled for help.
被困的登山者发出了求救信号。
示意某人做某事
He signalled to the waiter to bring the bill.
他向服务员示意把账单拿来。
用手势示意
She signalled with a gesture that the meeting was over.
她用手势示意会议结束。
发出信号；表明（意图或态度）
Raising interest rates would send a signal that the government is serious about fighting inflation.
加息将发出一个信号，表明政府是认真对付通货膨胀的。
矛盾的信号；混乱的暗示
I can't tell if she likes me because she's been sending me mixed signals.
我无法判断她是否喜欢我，因为她一直给我发出矛盾的信号。
误解彼此的意思；弄错对方的意思
We got our signals crossed and both showed up at the airport without the tickets.
我们俩误会了彼此的意思，结果都到了机场却没带机票。
Use signaling naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆联想：signal 里藏着 sign（标记），把标记传出去就是“发信号”。
语域：neutral 常见场景：交通、日常沟通 signal 作动词时属于中性常用词，日常对话和书面语中都可使用。通常表示以手势、标志或设备等方式发出信号或表明意图；在较正式的文书或技术说明中也很自然，但如果强调非常随意的口头提醒，则不如 tell 或 let someone know 常用。
In British English, the past and past participle are 'signalled' and the present participle is 'signalling'.
Dictionary facts from DICTIONARY_API_DEV, ECDICT, OCTANOVE, WIKTIONARY, WORDNET.