I had a medical checkup before going abroad.
我在出国前作了一次体格检查。
事;
，超声波;I had a medical checkup before going abroad.
我在出国前作了一次体格检查。
The shopkeeper gave his store a final checkup before closing for the night.
店主在晚上打烊前对商店作了最后检查。
声明：以上
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