常見例句雙語例句According to the United State Geological Survey, bats save farmers at least $3 billion a year by scarfing down insects that would otherwise eat crops.據(jù)美國國家地質調查局，蝙蝠吃掉了很多昆蟲，每年至少要為農民節(jié)省30億美元，否則昆蟲就會去吃農作物。 返回 bats survey