Can someone please help me understand what the highlighted text is trying to explain? I don't understand what they mean.

MIPS Memory Access Instructions MIPS has two basic data transfer instructions for accessing memory lw $t0, 4($53) #load word from memory sw $t0, 8($s3) #store word to memory The data is loaded into (lw) or stored from (sw) a register in the register file - a 5 bit address The memory address - a 32 bit address - is formed by adding the contents of the base address register to the offset value A 16-bit field meaning access is limited to memory locations within a region of +213 or 8,192 words (+215 or 32,768 bytes) of the address in the base register