1. 词汇层面：心形可以翻译为heart shape，heart-shaped，heartlike等；

2. 形容词层面：heart-shaped 也可以用来形容物品或者景色的形状，比如heart-shaped cake，heart-shaped lake等；

3. 描写层面：用形容词和形容词短语来描述心形的特点，比如a curved and pointed shape resembling a heart，a two-lobed shape with a cleft in the middle等；

4. 指代层面：可以用 heart symbol 来代表心形，也可以简单用 heart 来表示。

举例：

1. I made a heart-shaped cake for my boyfriend on Valentine's Day. (我在情人节为男友做了一个心形蛋糕。)

2. The lake was heart-shaped and surrounded by mountains. (这个湖泊呈心形，四周环山。)

3. She drew a picture of a heart with a curly tail. (她画了一张带卷曲尾巴的心形图案。)

4. The couple exchanged heart symbols on their phones to express their love for each other. (这对恋人在手机上交换了心形符号来表达彼此之间的爱。)

5. The necklace was heartlike in shape, with a ruby in the center. (这条项链呈心形，中心镶嵌着一颗红宝石。)