这台机器的刀具非常锋利。

The machine's ___cutter is very sharp.

裁缝熟练地在布料上画线准备裁剪。

The ___cutter skillfully marked lines on the fabric before cutting.

海军派出了一艘快艇去救援遇险的渔民。

The navy dispatched a ___cutter to rescue the fishermen in distress.