地塞米松试验被抑制住了
overnight，前边加什么介词？
overnight，前面加什么介词？
前边用介词on，比如：
1.Leave it on overnight then wash in hot water.把它置放一整夜，随后用开水清洗。
2.Effect of rifampicin on overnight 1.5 mg dexamethasone suppression test.利福平对留宿1.5mg地塞米松抑止试验的危害。
3.Apply lavishly to clean face, and leave on overnight, gently rinse or tissue off in the morning.于夜里洁肤及爽肤后，匀称地涂于表面，早晨用清水或爽肤水冲洗就可以。