fall-away v. (友情)背叛；（時間）流逝；下降fall wood [農(nóng)業(yè)科學]晚材fall within 屬于；該當，適合fall weeping to the ground 哭倒于地fall webworm fall victim to a sword 伏劍而亡fall victim to 成為…的犧牲品；成為…的受害者；屈服于…；被…降服fall victim 受害fall upon 開始行動，進攻fall under 受到（影響等）；被歸入fall to the ground 落地；失敗fall to pieces 破碎，倒塌fall to doing 著手fall through the cracks 未加注意、疏忽、未加檢查而通過fall through temptation [航空、航天科學技術(shù)]受誘惑而墮落fall through 落空；失敗fall silent with each other 相對無言fall silent 突然沉默下來；沉默fall sick from overwork 積勞成疾fall sick 生病