duì / shǒu / fáng / shǒu / sōng / xiè / wǒ / men / bì / xū / chèn / xū / ér / rù / jǐn / kuài / kuò / dà / yōu / shì

对手防守松懈，我们必须趁虚而入，尽快扩大优势。

The opponent's defense is lax, so we must exploit the weakness and quickly extend our lead.