toss-up

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++ˈtoss-up noun  1  it’s a toss-up spokenUNCERTAIN used when you do not know which of two things will happen, or which of two things to choose 这事尚难预料，这事尚未定夺 I don’t know who’ll get the job – it’s a toss-up between Carl and Steve. 我不知道谁会得到这份工作——卡尔和史蒂夫都有可能。2. [countable usually singular] British EnglishDECIDE an act of tossing a coin in order to decide something 抛硬币决定

ˈtoss-up nounChineseSyllable  

toss-up
ˈtoss-up noun
1. it’s a toss-up spoken used when you do not know which of two things will happen, or which of two things to choose:
    I don’t know who’ll get the job – it’s a toss-up between Carl and Steve.
2. [countable usually singular] British English an act of tossing a coin in order to decide something

toss-upBrE /ˈtɒs ʌp/ 🔊NAmE /ˈtɔːs ʌp/ 🔊, /ˈtɑːs ʌp/ 🔊 noun [singular] (informal) a situation in which either of two choices, results, etc. is equally possible （两种选择、结果等的）同样可能，均等机会◆'Have you decided on the colour yet?' ' It's a toss-up between the blue and the green.' “你决定了要什么颜色没有？” “在蓝色和绿色之间实在难以取舍。”🔊🔊