单词：nodes
n any thickened enlargement
n (botany) the small swelling that is the part of a plant stem from which one or more leaves emerge
n (physics) the point of minimum displacement in a periodic system
n (astronomy) a point where an orbit crosses a plane
n the source of lymph and lymphocytes
n any bulge or swelling of an anatomical structure or part
n (computer science) any computer that is hooked up to a computer network
v express or signify by nodding
v lower and raise the head, as to indicate assent or agreement or confirmation
v let the head fall forward through drowsiness
v sway gently back and forth, as in a nodding motion
v be almost asleep
nodes的用法和样例：
例句
- A path is a sequence of distinct nodes.通路是不同节点的序列。
- If some nodes are empty, they are being deleted.如果某些节点是空的，他们可以被删除。
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