fall back on造句
31 President Polk's alternative to the Wilmot Proviso was to fall back on the Missouri Compromise, an 1820 law that permitted Missouri to be admitted as a slave state with Maine as a free state.
32 I still have the heart finesse to fall back on.
33 He tries to fall back on the other pleasure of life.
34 The enemy had to fall back on their final line of defence.
35 However, he had another son -- the youngest one -- to fall back on.
36 The troops were ordered to fall back on the second line of defence.
37 The loans also give them recurring income to fall back on when market conditions worsen.
38 Shenton's critics, it should be pointed out,[www.] can fall back on spherical trigonometry and astronomical -observations that date right back to Aristotle in 330BC.
39 When all else fails, there is still civic pride to fall back on.
40 Doctors sometimes fall back on modern medicines in case of emergency.
41 The soldiers were ordered to fall back on the final line of defence.
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