单词详解
n.
A. 英语字母中的第十五个字母,小写为o (the 15th letter of the Roman alphabet)
“Ocean” begins with O. Ocean以字母O开头。
B. 零 (zero)
He is in Room 101 (读作room one o one). 他在101号房间。
C. O字形物,圆形 (O-shaped sign or mark)
His mouth formed a big O in surprise. 他惊奇得张着嘴,像个大写字母O一样。