单词	用催促
释义	同CONSTRAINEDLY
随便看	free-surface condition free surface correction free surface effect free-surface effect free surface energy free surface equation free surface flow free surface instability free surface shock wave free surplus free-swelling index free-swimmer freeswimmer free-swimming freeswimming free-swinger free-swinging free-swinging meander free-swinging pendulum free swing of pendulum free switch free symbol free system resources freet free-tailed bat