In contrast, children spent only 9 hours with their single mothers.

相比之下，孩子们和单亲母亲在一起的时间只有9个小时。

youdao

Seeing conditions (or air turbulence) is the single most important factor that degrades image contrast and planetary detail.

观察的条件(大气扰动)是影响对比度和行星细节的最重要的因素。

youdao

The average lizard, by contrast, is happy to consume a single grub a day.

相比之下，平均每只蜥蜴一天中只乐意享受一次美食。

youdao

But their technology was based on the luminescent abilities of small organic molecules--single molecules--in contrast to the large ones--chains of molecules--Friend utilized.

FORBES: Innovators

By contrast, single-family home building, which makes up nearly two-thirds of the market, fell 4.8 percent to an annual rate of 619, 000.

NPR: US Housing Starts Surpass 1 Million In March

By contrast, few makers of single-purpose devices seem to understand that less is more.

WSJ: Are Multipurpose Devices Better Than Products That Perform One Function?