burrow

n.穴；地洞

burly, burn, burn (itself) out, burn (sth) to sth, burn down, burn oneself out, burn out, burn sth off, burn up, burn-up, burner, burning, burnish, burnous, burnt, burnt down, burnt offering, burp, burr, burriedly, bursar, bursary, burst, burst into, burst into laughter, burst out laughing, burst out laughing (crying), burst up, burst upon, burst with, burton, bury, bus, bus lane, bus ride, bus stop, bus-driver, bus-shelter, bus-stop, busboy,