底承托; 撑托
Bracket \Brack"et\, v. t. [imp. & p. p. {Bracketed}; p. pr. &
vb. n. {Bracketing}]
To place within brackets; to connect by brackets; to furnish
with brackets.
Bracketing \Brack"et*ing\, n. (Arch.)
A series or group of brackets; brackets, collectively.