三十秒用英语怎么说？

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30 seconds

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thirty seconds
具体读音大概为宴凯：
（汉语拼唤祥举音标注）
she一声 ti一声和碧 sai一声 ken三声 zi轻声
thir ty se con ds

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30秒－－30 secs

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thirty seconds.
half minute.

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30 seconds /half a minute

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