,无论从原点沿着哪个方向走，只要固定方向，r就是从0开始到。
r No matter which direction I go from the origin, r=a if I fixed it,r goes from zero to r equals a.
无论观者从哪个细节开始欣赏整幅作品，眼睛都可以顺畅地游走，最终被两名主角的浓情一刻所俘虏。
Regardless of whichever pictorial element the viewer begins in appreciating the overall painting, eyes glide smoothly, even locking eyes with the two protagonists in momentary sentimentality.
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