lifesaver
lifesaver — 名詞
1. a person or thing that gets you out of a difficult or unpleasant situation by pr
救星
在困境中提供及時幫助的人或事物
a person or thing that gets you out of a difficult or unpleasant situation by providing exactly what you need at the right moment
After Cyrus lost his notes, his classmate Jisoo was a lifesaver by sharing hers.
Cyrus 弄丟筆記後，同學 Jisoo 與他分享筆記，真是個大救星。
person as lifesaver — sharing needed items
This translation app was a lifesaver when Ishaan's phone broke in a foreign country.
Ishaan 的手機在國外壞掉時，這個翻譯 App 真是救星。
thing as lifesaver in a travel emergency
A spare phone charger was a lifesaver during the long power cut at Camila's hotel.
Camila 住的旅館長時間停電時，備用手機充電器真是救星。
When Tamar forgot her wallet, Owen offered to pay — he was a real lifesaver.
Tamar 忘了帶錢包，Owen 主動幫她付錢——他真是個大救星。
The emergency contact that Dario saved on his phone turned out to be a lifesaver.
Dario 存在手機裡的緊急聯絡人，到頭來成了他的救星。
文法句型
be a lifesaver
[possessive] + lifesaver
用法筆記
Often used in the fixed expression 'You're a lifesaver!' when thanking someone informally for unexpected help.
常見錯誤
2. a piece of equipment, a device, or a system designed to prevent death or serious
救命設備
在緊急情況下防止死亡或受傷的裝備或裝置
a piece of equipment, a device, or a system designed to prevent death or serious injury when an emergency happens
The life jacket was a lifesaver during the boat accident on the lake.
湖上的船難中，救生衣成了救命設備。
lifesaver as safety equipment (life jacket)
AED machines placed in public buildings can be lifesavers during heart emergencies.
放在公共建築中的 AED 機器在心臟緊急狀況時可以救命。
lifesaver as medical device (AED)
These smoke detectors are real lifesavers — they give you time to escape a fire.
這些煙霧偵測器是真正的救命設備——它們讓你有時間逃離火災。
Seat belts are simple lifesavers that prevent serious injuries in car crashes.
安全帶是簡單的救命設備，能在車禍中防止重傷。
The emergency oxygen mask dropped down and became a lifesaver for everyone on the plane.
緊急氧氣面罩掉了下來，成了飛機上每個人的救命設備。
- safety device
more formal and technical
- life preserver
more specific — a flotation device
- death trap
something dangerously unsafe
文法句型
be a lifesaver
lifesaver + for
用法筆記
Sense 2 refers only to objects or systems — not to people. For a person who saves lives in an emergency, use sense 3 or the word rescuer.
3. someone whose job it is to watch over swimmers at a beach, swimming pool, or wat
救生員
在海灘或泳池負責救援溺水者的人
someone whose job it is to watch over swimmers at a beach, swimming pool, or water park and to rescue anyone in danger of drowning
The lifesaver spotted a struggling swimmer and dived into the pool right away.
救生員發現一名游泳者遇險，立即跳入泳池。
lifesaver as job: rescuing swimmers
Tunde works as a lifesaver at the public beach near his home every summer.
Tunde 每年夏天在住家附近的公共海灘擔任救生員。
A good lifesaver must stay focused and ready to jump in at any moment.
優秀的救生員必須保持專注，隨時準備跳入水中。
The lifesaver blew her whistle to warn the children about the dangerous current.
救生員吹哨警告孩子們注意危險的水流。
Élise trained for months and finally became a certified lifesaver at the water park.
Élise 訓練了數月，終於成為水上樂園的合格救生員。
- lifeguard
the dominant term in American English; also common globally
- beach patrol
refers to the team or organization, not the individual
文法句型
work as a lifesaver
certified lifesaver
用法筆記
In American English, this person is nearly always called a lifeguard. Lifesaver in this sense is more common in British, Australian, and New Zealand English.