1) keep your fingers crossed 兩指交叉以求好運,但愿如此
Keep your fingers crossed we'll have some yummy salad to eat this summer!
希望我們夏天能有美味的沙拉吃!
2) green thumb 在種花或種菜方面很有才能
Oh wow! Well your mom has an awesome garden. I bet you have a green thumb too!
哇!你媽媽的園子很漂亮。我相信你也是種植好手!
3) lay a finger on something 碰一下
She never let me lay a finger on her garden! I've killed every house plant I've ever owned.
她根本不讓我碰她的園子!我把我家的植物全都弄死了。