以便means so that,in order to,说大声点,以便我们听到,speak loudly so that i can hear you。
一旦means once,if,要是你出错,你就会输,if you make mistake,you will lose,you will lose once you make mistake。
April 26, 2015
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Catalan, Chinese (Mandarin), English, French, German, Japanese, Spanish, Vietnamese
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Chinese (Mandarin), English, French, German, Japanese, Vietnamese