强而后可qiǎng ér hòu kě

consent upon sb’s insistence (/under compulsion)
❍ 良曰：“请复之。”～，一朝而获十禽。(《孟子·滕文公下》) Wang Liang said，“I beg leave to try again.” By dint of pressing,this was accorded to him,when in one morning they got ten birds.

强而后可qiáng'érhòukě

〔其他〕 经强求后才许可。语出《孟子·滕文公下》：“（王）良曰：‘请复之。’强而后可，一朝而获十禽。”[例]～，俞社长终于同意他出差了。
△ 用于表示勉强应诺方面。

强而后可qiáng ér hòu kě

强：强硬，强迫。可：可以，答应。即在强迫之下答应对方。