雄心是使他努力工作的刺激物。
它是有选择性的，取决于刺激物的暴露程度以及对它们的注意力。
It is selective, depending on exposure to stimuli and attention paid to them.
分泌的刺激物是否直接影响胃粘膜的血流量还不清楚。
It is not clear whether secretory stimulants directly influence the flow of blood to mucosa.
趋向化学刺激物的运动。
“本身无力的作品常被证明为是想象力的刺激物”W。
"Works which were in themselves poor have often proved a stimulus to the imagination" W. h.
“本身无力的作品常被证明为是想象力的刺激物”W。
"Works which were in themselves poor have often proved a stimulus to the imagination" W. h.
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