Don't spill too much fat on the barbecue as it could flare up.

不要在烤肉上浇太多的油，因为它可能会突然烧起来。

You need not flare up merely because I mentioned your work.

你不必因为我提到你的工作就大发雷霆。

Your skin will likely flare up.

那么皮肤可能会爆发。

He looked as if he was about to flare up.

他看起来像是要突然发怒的样子。

Flare up the cooper tube to connect a union.

把铜管做成喇叭口形状以便接上活络接头。