We may take a chance on her being at home.也许碰巧她在家.I met her by chance on the street.我恰巧在街上遇到了她.You take a chance on the weather if you holiday in the UK.在英国度假，只有赌天气了。...
肺实际上由上千条细微的气管构成。The lungs are in fact constructed of thousands of tiny tubes.一扭开煤气管,你就应该点燃煤气.You should light the gas as soon as it is turned on.吸进气管的食物会造成窒息.Food breathed into the windpipe can cause choking....
I know it's nothing serious and I feel quite unemotional about it.我知道那根本没什么大不了的，所以有些无动于衷。She was fitted with a pacemaker after suffering serious heart trouble.她患上严重的心脏病后安装了心脏起搏器。He sustained serious neck injuries af...
总可以做到使得简并的本征函数是正交的.It can always be arranged that degenerate eigenfunctions are orthogonal.此外, 这三个解全都是互相正交的.Further, these three solutions are all orthogonal to each other.和两个不同的主胁变相对应的主方向是互相正交的.The principal directions ...