While evaporation from the oceans is the primary vehicle for driving the surface-to-atmosphere portion of the hydrologic cycle, transpiration is also significant.

虽然海洋蒸发的水蒸气是水循环中地球表面到大气这一渠道的首要组成部分，植物蒸腾所占的部分也颇为惊人。

youdao

Suppose that during a standard production cycle, your primary server crashes, and your secondary server picks up the workload.

假设在标准生产周期中，您的主服务器崩溃，辅助服务器接管了主服务器的工作负荷。

youdao

Peter explicitly takes his ideas from lean manufacturing and the Plan-Do-Check-Act cycle from Deming (this should be familiar to many of us in the Agile field as our primary way of learning).

很明显，Peter的想法是从精益制造和Deming(敏捷领域中应该有很多人都对此很熟悉了，它是我们的主要学习方式)中的Plan - Do - Check - Act循环衍生出来的。

youdao

Interrupting that cycle was a primary goal of President Obama's massive economic-stimulus package, which he championed almost immediately upon entering the White House.

VOA: standard.2009.07.02

Many children drop out of school before completing a full primary cycle.

UNESCO: World Water Assessment Programme (WWAP)

Almost one school-age child in four (23%) has never been to school, or dropped out of school before finishing the primary cycle in this region, where the absolute number of children denied access to school has climbed from 29 million in 2008 to 31 million in 2010.

UNESCO: HIV and AIDS

This was really a classic boom and bust cycle with primary roots in discretionary monetary policies untethered by stable money linked to something real like gold.

FORBES: The Monetary Foundations Of Economic Prosperity