in twice

This is because you halved the amount of light being let through the aperture opening, but let in twice as much light by keeping the shutter open longer.

这是因为前一组你用了一半的光圈，而后一组用了一半的快门时间。

Put the drops in twice a day, morning and evening.

每日两次, 早上和晚上滴用.

Firstly, using the contraction mapping principle, combining some priori estimates and the convergence of Bessel function, the well_posedness of solutions of the initial value problem in twice continuous differentiable space was obtained according to the equivalent integral equation of initial value problem for the Klein_Gordon equations.

首先利用压缩映象原理，结合一些先验估计式及Bessel函数的收敛性，根据Klein Gordon方程初值问题的等价积分方程，在二次连续可微空间中得到了初值问题解的适定性；

The village was snowed in twice last year.

这个村庄去年两次被雪封住.

The horse came in twice in the third and fifth races.

这匹马赢了两次第三次比赛和第五次比赛.

They are in twice daily radio contact with the rebel leader.

他们每天用无线电和叛军首领联系两次。