semaphore
US /ˈsem.ə.fɔːr/
UK /ˈsem.ə.fɔːr/
名詞
1.
旗語, 信號系統
a system of sending messages by holding two flags in certain positions according to a code
範例:
•
Sailors used semaphore to communicate between ships.
水手們使用旗語在船隻之間進行通信。
•
The old lighthouse used a form of semaphore to warn ships of danger.
舊燈塔使用一種旗語形式來警告船隻危險。
2.
信號量 (計算機), 同步機制
(in computing) a variable or abstract data type used to control access to a common resource by multiple processes and avoid critical section problems in a concurrent system such as a multitasking operating system
範例:
•
The operating system uses a semaphore to manage access to shared memory.
作業系統使用信號量來管理對共享記憶體的訪問。
•
Understanding semaphores is crucial for concurrent programming.
理解信號量對於並發編程至關重要。
動詞
1.
用旗語發送, 用信號量發送
send (a message) by semaphore
範例:
•
They tried to semaphore a warning to the distant ship.
他們試圖向遠處的船隻發送旗語警告。
•
Can you semaphore the message to the other side of the field?
你能把信息用旗語發送到場地的另一邊嗎？
在 Lingoland 學習這個單詞