1. crack a smile 展顏微笑，莞爾一笑

The man was willing to do anything to make his wife crack a smile.

為了讓他的妻子展顏微笑，他愿意做任何事情。

2. laugh a hearty laugh/laugh heartily 放聲大笑，開懷大笑

Upon hearing that he had won the lottery, the man laughed heartily.

知道自己中獎了，這個男人開懷大笑。

3. force a smile 強(qiáng)作歡顏

At the funeral, he forced a smile for anyone who offered condolences.

在葬禮上，他強(qiáng)顏歡笑面對前來吊唁的人。

4. saccharine smile 諂笑，諂媚的笑

When he talks to his boss, he puts on a saccharine smile.

他跟老板說話的時候，滿臉都是諂媚的假笑。

5. smile bitterly 苦笑

The student smiled bitterly when his teacher caught him copying his homework.

抄作業(yè)被老師抓到后，這個學(xué)生滿臉苦笑。