单词 扣上安全带 例句 DEFINITIVE EXAMPLES 权威例句〔buckle up〕He won't start the car until we've all buckled up.他直到我们都扣上安全带才开车。21世纪英汉〔buckle〕Buckle your safety belts.扣上安全带。牛津同义词〔compulsory〕The wearing of seat-belts is co...