until now的例句大全

Until now, people mainly use hardware equipment matched with special fluorescence dyes to eliminate the background fluorescence, but the operation could be infeasible and none of the method solves the problem.

到目前为止，人们主要是通过利用硬件设备与特定荧光剂配合的方法来消除背景荧光，然而这些方法操作过程并不便捷，并且并不能真正地解决背景荧光的问题。

Until now, in some areas unmarried men and women need to give betrothal gift before marriage.

直到现在，部分地区未婚男女在缔结婚姻之前仍要给付彩礼。

Although Durex condoms are now ready for packaging, they will not reach that stage until they have undergone a series of five stringent tests.

虽然杜蕾斯安全套已经可以进行包装，但在包装之前，它们需再接受五项严格的测试。