She swung around to him, spilling her tea without noticing it.她一下子转身面向他，茶水溅了出来都没注意到。Andrew couldn't help noticing that she coloured slightly.安德鲁不禁注意到她有点脸红了。He passed into the house without my noticing him.我还没注意到他,他就...
二进制the binary system使用二进制标号法实际上只运用1和0两个数.Using binary notation is in fact just manipulating ones and noughts.我们试一试,把这个数本身变成二进制数.Let us try converting the number itself to binary....