just in case if by any chance one ten-thousandth
"What if there´s another murder?" — "Steady on!"
“万一又有人被杀呢?”——“说话注意点!”
—— 柯林斯例句There is a supplementary water supply in case the rain supply fails.
万一主水源断了,我们另外有供水的地方。
—— 给力词典精选Should the weather be rough, we won´t be able to go riding.
万一是狂风暴雨的天气, 我们就不能去骑马。
—— 给力词典精选If something should happen to her, please ring me up at once.
万一她有个好处, 请立刻打电话给我。
—— 给力词典精选What if anything should happen to him?
万一他有个长短, 怎么办 ?
—— 给力词典精选