方， ほう
1. direction, way, side, area (in a particular direction)
2. side (of an argument, etc.), one's part
3. type, category
4. field (of study, etc.)
5. indicates one side of a comparison
6. way, method, manner, means
7. length (of each side of a square)
方向，……侧，……边；……方；比较的一方；路，办法；边
で
1. at, in
2. at, when
3. by, with
4. within, in
5. and then, so
6. and, then
7. let me tell you, don't you know
表示范围
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
