慢速英语:China Warns US Spy Plane in South China Sea

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1. issue vt.发行;发布;流出
例句：The bank can issue a letter of indemnity to the shipper.
银行可向承运人出具保证函。

2. migrant n.候鸟;移居者，移民
例句：We have analyzed the migration process as seen by the individual migrant.
我们从个别移民的看法，分析了移居的过程。

3. rescue vt.营救，救援
例句：His fearless rescue saved five lives.
他勇敢地救了三个人的性命。

4. consider vt. 考虑;认为
例句：There are two components to consider.
有两个组成部分需要考虑。

5. obstacle n.障碍（物）;障碍物（绊脚石，障碍栅栏）
例句：We laid about to surmount the obstacle.
我们努力克服障碍。