[kāi huā]
（花蕾開放； 比喻心里高興或臉露笑容） flower; bloom; blossom; be in flower; come into flower
burst with joy; feel elated
心里樂開了花
The cherry-trees began to put forth their blossoms.
櫻桃樹開始開花了。
There is no blossom this year on the plum trees.
今年李子樹不開花。
（裂開； 炸開） explode
The hand-grenade exploded right over the enemy.
手榴彈在敵人頭上開花。