Supermarkets generally stick to the tried and true.

超市一般坚持采用经证实切实可行的方法。

Let's not forget the tried and true warhorse of the fixed rate loan.

让我们不要忘记，真正的尝试了战马固定利率贷款。

So in 1998, scientists around the world were furiously sequencing lines of genetic code using the tried and true, yet laborious, Sanger method.

因此1998年，世界各国的科学家运用实践证明过的“桑格测序法”，对各种遗传基因展开“疯狂”的测序。

HTC followed the tried-and-true Taiwanese outsourcing formula of designing and manufacturing gadgets for other companies without a brand name of its own.

接着它跟随台湾百试不爽的外包原则—为别的公司生产设计无自己品牌的零部件。