alloy

这种合金由铜和锌混合制成，比纯铜更耐用。

This ___alloy is made by mixing copper and zinc, making it more durable than pure copper.

这位珠宝大师将纯金与钯熔合，打造出一枚足够几代人日常佩戴的耐用戒指。

The master jeweler ___alloyed pure gold with palladium to produce a ring durable enough for generations of daily wear.

航天工程师为卫星外壳选择了一种轻质的钛铝合金，以承受极端的温差变化。

Aerospace engineers selected a lightweight titanium-aluminum ___alloy for the satellite's outer shell to withstand extreme temperature swings.