1.Opponents of this use of antibiotic say it adds to worldwide resistance to such drugs.
add to 加入,加到;增添,添加(某物);加強:
Add the second total to the third.
把第二筆總額加在第三筆總額上 。
The bad weather added to the shipwrecked sailors’ difficulties.
惡劣的天氣增加了失事船只的船員們的困難
。