adj. orbiculate
但是真正的耳塞跟iPod的耳塞是一样，硬硬的，圆盘状的，所以戴起来不是很舒服。
But the actual buds are hard, round disks like iPod's, so they're not comfortable.
机器人选的是Roomba——一个圆盘状的自动真空清洁机，还有四个像人类的机器人——它们具备的人类特点多少程度不同。
The robots were the Roomba, a disc-shaped autonomous vacuum cleaner, and four anthropoid machines of varying degrees of humanness.
活动星系从它们的核部发出明亮的光芒，在那里，气体被加热并压缩成一个漩涡状的圆盘，漩涡的中心便是黑洞。
Active galaxies give off bright radiation from their cores, where gas heats up as it is compressed into a swirling accretion disk encircling the black hole.
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