The researchers observed the reaction using an ultrasound.

研究者使用一种超声波观察到了反应。

youdao

The researchers observed 95 asteroids in the vicinity of our planet, called near-Earth asteroids (NEAs).

研究人员们观测了95颗地球附近的小行星，它们被称为近地小行星(NEAs)。

youdao

To answer that question, the researchers observed the behavior of amputated octopus arms, which remain very active for an hour after separation.

为了找到答案，研究人员将章鱼腕足截取下来，观察其行为，这些腕足在离体一小时后仍然相当有活力。

youdao

The researchers compared cotinine levels to behavioral problems that parents observed in the children during a 2-week period.

VOA: special.2009.01.13

Researchers say they observed shortages in the brain's reward system in patients with A.D.H.D.

VOA: special.2009.09.29

"But in the late 1980s, the coastal fishery began to exhibit a surprising recovery, " the researchers observed.

BBC: Egyptian farmers (Getty Images)

The researchers observed a pattern where the CEO kept about five times as much food as the worker.

FORBES: Primate Economics

During the winter of 2004, the researchers observed 340 attacks by great whites on fur seals within 2km of the island.

BBC: Earth News - Great whites 'plan' seal attacks