battery booster

基本解釋

And yet I never stopped loving him and using his love like a battery booster whenever I needed to rev up my courage or soothe my sagging spirit.
但是，我對(duì)他的愛從未停止過。而他的愛更是我的充電器，在我需要勇氣或是意志消沉的時(shí)候給我鼓勵(lì)和安慰。
The newly designed Li-lon battery pack now has an audio amplifier built in, allowing you to use an external speaker, without the need for any external booster.
新設(shè)計(jì)的鋰離子電池現(xiàn)在有一個(gè)音頻放大器內(nèi)置，讓您使用外部敭聲器，而不需要任何外部助推器。