词汇	be on his guard
释义	be on his guard vi.戒备着
随便看	twine unit twin exchangeable disc storage twin exchangeable disc storageTEDS twin executives twin exhaust pipes twin extruder for two colors twin-engine twin engine aircraft twin-engine aircraft twin-engine airplane twin engined twin-engined twin engined aeroplance twin-engined aggregates twin-engined aggregatestwo-engined aggregates twin engined airplane twin-engined bus twin-engined drives twin-engined fighter twin-engined freighter Twin Engined Helicopter twin-engined plane twin-engineds twin-engine incorporation twin-engine jet