consider
thread ends
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→si1xu4 • sīxù
train of thought
train of thoughts, thoughts, thinking
他 的 思绪 被 杂事 打乱 了。
His train of thought was disrupted by trivial matters.
读书 帮助 我 集中 思绪。
Reading helps me focus my (trains of) thoughts.
他 的 思绪 纷杂。
His trains of thoughts are in disorder.