(obsolete) San Francisco Bay (a bay of San Francisco, California, United States)

set of problems

Demon core, a spherical subcritical mass of plutonium manufactured during World War II by the United States as a fissile core for an early atomic bomb

(Buddhism) think on the power of Kannon

赤外線天文学: infrared astronomy

花一匁: a traditional Japanese children's game that is similar to the game red rover

attach / love

answer / response

外国語: (linguistics) foreign language

母国語: mother tongue