寫論文時，遇到了幾個問題. 還請各位大師幫忙, 謝謝...
1. Assume that they are equal and elliptic discs.
這句話是否改成
Assume that they are equal elliptic discs.
會比較好?
2. 當遇到 either ... or ... 時, 該不該加上個逗點?
例如:
either A or B and B' ...
(但這裡的 B 與 B' 是一起的)
所以我是否該加上個逗點變成
either A, or B and B' ... ?
謝謝...

1 可以2. 如果只是 symbolic logic 的話，可以用 []如 either [A] or [B and B']如A與B僅是代號，原句則有詞或句，那可用豆點如 either she opened the door, or John was hereand John did not close the door...

wow tengharold must have studied logic before

謝謝各位..