That sound Your mouth is open and you're gonna be able to see your tongue near the top teeth between the top and the bottom teeth, but a little higher in your mouth, uh, and then touch the tip of your tongue to the back of your top front teeth for the D.
那個聲音 你的嘴張開,你會看到你的舌頭靠近上牙和下牙之間,但在你的嘴裡高一點,呃,然後把你的舌尖接觸到你的上前牙的後方,為D。