skull and crossbones

n. 骷髅图; 骷髅旗

例句与用法：

An instrument or device used to measure the skull.

头盖测量器用于测量头盖的仪器或部件

The victim's skull had been stove in by a heavy instrument.

遇害者的头颅是用重物击穿的。

The farmer turned up a human skull while ploughing the field.

那农民　地时挖出一个人类的头颅骨。

词形变化：

名词复数: skulls and crossbones |

详细释义：

ph.

1. 骷髅画(由骷髅和交叉的大腿骨组成, 象征死亡或危险)

2. 骷髅旗(旧时的海盗旗)