同根派生 英汉例句Here is a thromboembolus that originated from mural thrombus in the left atrium.此栓子源于左心房的附壁血栓。With practice, you will learn to obtain a short axis view through the aorta and left atrium.经由练习，可以学会藉由主动脉与左心房得到一个短轴的图像。